Report: Backlink Tools Show 30% To 50% Of Your Links

Report: Backlink Tools Show 30% To 50% Of Your Links
Remember that study Eric Enge published that said Google+ has no ranking benefit? Well, part of that, Eric said that an issue with his report may be that he can't find all the links to his site.

Specifically, he estimates that 30% to 50% of the links are not reported cumulatively via both the third party tools and search engine backed tools. Specifically, he said he uses Open Site Explorer, Majestic SEO, Webmaster Tools, and Ahrefs and he thinks at best, only 50% of his links to a site are reported back.

Do you think 30-50% is accurate?
Is there even a real way for us to count all the links to a site without building our own spider and system that is guaranteed to crawl every page on the internet. Even then, you'd be unsure.

Author: Barry Schwartz