I have gained a lot of experience cleaning up spammy links over the past 6 months. This task is the most time consuming and unrewarding task in SEO. It is also necessary if your site has been manually penalized for "inorganic" links.
Does anyone have any suggestions on getting these removed?
I worked with Google on this topic for a client. My client's site was manually penalized specifically for "inorganic links". The client is an industry leader in their niche doing about $20 million in sales per year. They had millions of manipulative links pointed to their site from over 1000 linking root domains.
Step one: Google was absolutely firm in their expectation the links be removed prior to the penalty being lifted. This client had over 100 websites which were various forms of their main site (i.e. duplicate content). All the duplicate content sites were removed except the legitimate, human translated language variations of the site. We reported to Google these efforts which resulted in about 97% of the links being removed. Google responded that it was not enough and they required the links from the other external sites to be removed.
Step two of the process: we created an Excel spreadsheet to contact the sites giving priority to the sites with the most links. We tracked the following information: date of contact, initials of employee who performed contact, URL of domain, method of contact (e-mail / phone / contact us page), we provided a link to a copy of each e-mail we sent (see notes below), the date a response was received (if any), and a confirmation of whether the link was still visible.
Regarding the e-mails which were sent, they were very polite customized letters for each site. The letter format was as follows: introduction, description of the problem (i.e. our website has been penalized by Google...), the request to remove links, the location (URL) of all known links within their domain, and we thanked them for their efforts.
The results were we contacted hundreds of domains. The response rate was 14%. In this case, the company had these links built by another "SEO company" mostly between 2007 - 2009.
We reported our results to Google, shared the documentation and their response was:
"Thank you for your request and all of the follow up analysis. We've reviewed your case again, and unfortunately there are still many inorganic links pointing to the site. For example:..."
That led to step three: we went back to the original list of linking sites. For each and every site we covered four methods of contact: e-mail (if their address could be located), phone call (if a phone number could be located), contact us page (if the site offered one) and we looked up their WHOIS information and used that method of contact if the information was different then what was previously available.
Additionally, we went ahead and completed the list of contacting EVERY site who showed a link in Google WMT, even the hundreds of sites with only a single link. We knew our efforts would fail (14% rate of success) prior to starting so our focus was providing solid documentation. If you named a link we could present a copy of an e-mail request sent to remove the link, the date/time of when it was sent along with who sent it. That was the goal.
After submitting this final information to Google, they "partially" removed the manual penalty. The site seemed to rank normally but not as well as before. Google's response:
"Hello Ryan,
Thank you for your follow up email and all of the information provided. The documentation you provided was very helpful in processing and understanding this case.
After re-evaluating your site’s backlinks we are able to partially revoke a manual action. There are still inorganic links pointing to your site that we have taken action on. Once you’ve been able to make further progress in getting these links removed, feel free to reply to this email with the details of your clean-up effort"
Another client was also penalized but they had a single SEO company build most of their inorganic links. In this instance, the SEO company was able to remove almost all the links directly. They had control over many of the linking sites, they had retained their usernames / passwords to forums, etc. The success rate of link removal clearly depends on how long ago the links were built, how spammy the sites are (i.e. if you build links on disposable sites which are not monitored, you clearly wont find help having them removed) and how the links were built.
Good Luck,
-Ryan