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Eric Enge: Backlink Tools Show 30% to 50% of Backlinks

Is 30% - to 50% Adequate?

2:41 am on Sep 21, 2013 (gmt 0)

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In a SearchEngineLand article [searchengineland.com] discussing a study he did, Eric Enge acknowledged that backlink tools like Majestic SEO and even Google's own Webmaster Tools were inadequate.

...by my estimate the cumulative links found by Open Site Explorer, Majestic SEO, Webmaster Tools, and Ahrefs is probably at best 50% of the total links to a site, and it may be as low as 30%.

Does that correlate to your experience?
4:44 pm on Sept 22, 2013 (gmt 0)

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It does. I typically combine data from Google & Bing WMT as well as Majestic SEO and OSE when researching backlinks. I don't subscribe to Ahrefs.

Majestic is probably my favorite source as it tends to show the largest sample and provides a lot of additional info that the others don't like image vs text link, follow vs. nofollow, if image then alt attribute values, etc.
12:44 pm on Sept 23, 2013 (gmt 0)

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What we really need is a tool that
(a) shows a large percentage of backlinks (80% as a minimum)

(b) filters out dead/expired backlinks (these create too much noise)
2:09 pm on Sept 23, 2013 (gmt 0)

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Majestic does the latter (filters out deleted links)... unfortunately, no one crawls as many web sites or as crawls those sites as deeply as does Googlebot. And the resources (server power, disk space, electricity to run the servers, etc.) that would be required to do so and to maintain just link graph data (no content) equivalent to theirs is mind boggling.
8:36 pm on Sept 25, 2013 (gmt 0)

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This correlates to my experience as well, and I also think Majestic shows the most data.

I dropped MOZ/OSE a while back due to not even coming close to Majestic/Ahrefs

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