Why links are still very important

Understandably, Google wants the link graph as clean as possible.  Disavowing links (asking Google not to take certain links into account when assessing your site) does not help as the disavowed links are still visible to both users and search engines. They can certainly help improving Google’s search results but by no means  do they solve the problem.
It’s not surprising that Google’s representatives always advise web masters to try to remove rather than just disavow the unnatural links.
Link removals | latestgoogleupdatenews.blogspot.com

However, if the value of links as an important ranking factor was really going to diminish then:
  • Why would Google have taken such drastic action against so many sites with unnatural links?
  • Why would Google keep sending website owners thousands of unnatural link warnings or take manual actions against websites?
  • Why would Google build the disavow links tool?
Google’s recent actions in fact verify that links are still a massive ranking factor, whether passing positive or negative value. According to Moz’s 2013 ranking factors survey links are still the most important part of the algorithm.
So on one hand links are still the main influence of rankings but on the other the line between success and failure is thinner than ever before. Risks associated with links have lately exponentially increased and pretty much any kind of strategy that aims to gain links in order to improve (or according to Google “manipulate”) rankings may be violating Google’s quality guidelines:

Is it worthwhile spending time on link removals?

There are two main situations where link removals would be beneficial:
  1. Your site has received a manual penalty
  2. Your site has been algorithmically hit by Google
However these are both reactive and proactively removing inorganic links to avoid being hit by the next update is recommended.
the most valuable SEO activity for 2014 | Link removals

Lifting a manual penalty

Recovering the dropped rankings for a few manually penalized keywords is usually easier than trying to recover an entire site that has been hit algorithmically across the board (i.e. Penguin).
Is it worth the effort? The answer largely depends on:
  1. The reasons that the penalty was invoked
  2. How many links need to be removed
  3. How many links can realistically be removed
  4. The time and effort required to remove them
  5. The costs associated with the link removal process
  6. How long you can afford to have poor search visibility

First and foremost you need to make sure that there is a good reason to spend time and effort on link removals and that this activity justifies the investment.
Manually identifying the unnatural links and removing them is challenging, yet necessary, in order to recover from a manual penalty.
This is because:
  1. Unlike disavow, a removed link 100% guarantees that the risk the link was posing no longer exists.
  2. There is a lot of evidence to share with Google about all the hard work that has taken place before requesting a manual review.

Recovering from algorithmic devaluations
Link removals can also help in cases of traffic drops caused by algorithmic devaluations.
However, in these cases according to Google’s engineer John Mueller you could try using the disavow tool right away bearing in mind that:
  1. It is a hint and not a directive so Google may or may not discount each disavowed link or domain.
  2. There is no transparency on which links/domains Google will actually discount.
  3. You will not get notified when the disavowed file gets processed.
  4. In some cases Google has cited disavowed links as bad link examples of unnatural links.

All these reasons clearly show that just disavowing may not be enough and link removals may be worth the effort.
Link removals  |  latestgoogleupdatenews.blogspot.com

Proactive link removals
Some of the clients I've worked with find it hard to believe that proactively removing links without having received a penalty or having lost traffic is worthwhile. Unfortunately, the truth is that when a site gets hit manually or algorithmically it’s too late and a full recovery in most cases can take months. For most businesses it is much more sustainable to allocate some of the available budget to proactive link removals rather than being under the pressure and uncertainty of lifting a penalty.
Google’s tolerance of unnatural links is constantly diminishing, so unless you regularly audit and remove any inorganic links which may be found pointing to your site, the day you may get hit will be getting closer and closer. In addition, even if there were no manipulative link building activities in your site’s entire back-link history, there are no guarantees that your back-link profile is squeaky clean. As anyone can build links to your website, keeping an eye on the state of your back-link profile is essential.
The following graph illustrates the percentage of manipulative links found on sites that were penalized by Google at different times during 2012. It is clear that from an 80% tolerance of manipulative links in April 2012, the threshold moved down to 50% in just six months.

Why back-link audits are more important than ever

Conducting a back-link audit regularly will help you to understand the current state of your site’s back-link profile and how it compares to that of the top-ranking competitors. This comparison will give you a rough idea of how much work is required to keep your site’s back-link profile as healthy as that of your best ranking competitors.
It is important to stress that different niches have different spam thresholds as they are part of different ecosystems. Carrying out a thorough, niche-specific back-link audit will make it easier to work out the potential risk as well as the percentage of links that may need to be removed.
Because no company has unlimited resources you have to be realistic as to whether spending time on link removals would be worthwhile. In which case…..

When might it be worth moving to a new domain?

In some cases it may be worth moving to another domain and starting from scratch rather than spending 12 or more months removing links with no clear indication about when the penalty will get lifted.  Even if it does, traffic is highly unlikely to ever recover to the pre-penalty levels, unless you spend more time compensating for the link equity loss by building new (and natural) links.
This is because in order to recover you need to lose those links that in the past used to help your most important keywords rank well in Google’s search results. If your business heavily relies on only a handful of keywords, which no longer rank in Google’s first page because of a penalty, considering a domain change may deliver quicker results. Of course this isn't possible for all businesses and it’s less of an option for well-established brands.
Even though all types of penalties can be lifted, the question you need to answer is how long you can afford to wait until a full recovery takes place. If your business isn't an established brand and largely depends on organic traffic from Google, re-branding or just moving to a slightly different domain may be quicker and have a higher ROI.

How many links should you remove/disavow?

What matters is not the number of links you have successfully removed (or disavowed) but the quality of the remaining ones.
These are the ones Google still sees as pointing to your site and the ones the web spam team are looking at when evaluating a reconsideration request. Google’s link assessment, whether manual or algorithmic, will be carried out based on the quality of all remaining links and not the ones which no longer exist.
If most of the remaining links are still unnatural you should try to remove more, otherwise the site’s rankings and traffic levels will not have the chance to recover.

Should you build new links whilst removing?

Often, this is the first question that arises right after a decision to remove links has been made. Building better quality but still unnatural links is not a good idea. What will Google’s reviewers think when they look into your reconsideration request and they come across recently acquired unnatural links?
To summaries, if Google’s red flag for unnatural links has already been raised, spending time on generating more inorganic links isn't going to help. And if you think that stopping link building may look unnatural and cause further issues this is certainly not the case if your site has already been flagged. When Google manually penalizes a website due to manipulative links, they want to see those links being taken down instead of more unnatural links being generated.

Should you just disavow without trying to remove the inorganic links?

Google’s disavow tool is not a directive but a hint. This means that it’s down to Google to decide which of the disavowed links will be discounted or not. In any case, Google will not notify you about which links have been discounted and which haven’t. Only when a link gets physically removed will the risk associated with it be gone.
Also, if you overly rely on the disavow tool and for some reason the disavowed links file gets accidentally removed or updated, your site’s rankings will then be at very high risk. Google strongly recommends trying to remove the manipulative links rather than just disavowing them. The disavow tool should be used as the last resort and not as a shortcut as it may help only in the short-term.

Who should audit the links before removing or disavowing?

Deciding which links should be removed or disavowed should only be done by manually auditing all the links which are pointing to your site. Relying on automated link classification services is not recommended because if you remove or disavow the wrong links your site will lose further rankings. Link removals, disavow file submissions and review requests should only be carried out by very experienced analysts.

When it is worth requesting a review?

Review requests are only applicable when a manual action has been in place. However, those can vary from site-wide actions (more severe) to partial-match actions (less severe). You should request a review only when you are confident that you have carried out enough to please Google’s reviewers e.g. have managed to remove a decent number of links and have well-documented both your successful and unsuccessful link removal requests.
Requesting a review may not be the right thing to do if in the meantime you have engaged in activities that violate Google’s guidelines e.g. building more inorganic links with the hope to negate the impact of the previous unnatural ones.
Trying to solve a small problem can in theory result in a bigger one, if your actions have not been in-line with Google’s quality guidelines. So, unless you have lost significant traffic and have carried out the required actions without making further violations, you may need to think again before submitting your site for a manual review.