I think opposite is true, since SEs don`t index inner pages as much as inner pages (due to difference in link popularity), rotating links in inner pages could have more lasting effects than rotating links on home page.

Secondly I have a feelin, position of exterenal links (rotating and non rotating) also plays an important role.

Large chunks of extermal rotating links can be filetered out, or links in the footer (end of the page) could also be easily mark out.

For example if a link is on an index page that gets its cache refreshed everyday and google sees that it finds the link there at least once a week, the link carries value. However, on a deep page that only gets cached/crawled once a month, rotating links will carry little to no value.

But I could be just talking out of my arse again.

You have to remember that most websites that can afford the Internet.com buy already had significant link popularity and great rankings going into the program so it is easy to confuse where the results are coming from. Obviously it is difficult to analyze a competitor when they have 2 million backlinks mixed in from Internet.com’s network. Maybe that alone is worth the price tag for some websites, it keeps competitors away