We do have a traditional inverted index over anchor text. That's just one aspect of our data set though. Originally, that was a larger focus and that's the nam

We do have a traditional inverted index over anchor text. That's just one aspect of our data set though. Originally, that was a larger focus and that's the name we've always called it. I could see how that might be confusing. However, I do think the common name for the data that we collect is called a backlink index, at least in our industry.