It’s been a few months since we carried out a smaller piece of research, based on a group of 100 sites. Just to recap, here is a quick rundown of the first study:
- 100 sample sites, selected at random
- Details on 50,000 backlinks per site imported and analyzed from each provider
- ahrefs vs Majestic SEO (Fresh Index) vs MOZ
- In total, we analyzed 4,010,432 links
- Conclusion: Majestic had the most links, whilst MOZ had the highest ratio of actual live links in its index
That was a very small sample of this research and gave us some insights into what we might expect when we analyzed bigger volumes of links. Whereas in the previous research we looked at 100 sites, with this second study, we we're going to be looking at 1,000 sites and potentially tens of millions of links. I'll give you all an idea of the kind of data processing that this might involve:
- Taking 1,000 random sites
- Importing up to 50,000 backlinks max. per site
- From 3 link data providers
- That's a total of 150,000,000 links to analyze (potentially)!
- Recrawling every link (live, dead, redirect, etc)
- Checking each link against Google's index
- At least 450,000,000 different queries!!!
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