Rros, to the point that sites are created for what appears to be a legitimate reason, get listed in dmoz and many other places (instantly it seems) but put one mislabeled link on the homepage to a page that has a list with full paragraph form of links back to sites that are paying the fee?
I don't know, I think it's pretty elaborate to set up 50-100 sites, get them all in dmoz, in other directories, spend months getting up the content so you can "fool" dmoz editors and then turn around and turn them into link depots.
It's working. In the niches I watch every single site on those pages is in the top ten after this update. Sure each page may carry 1/20 th the juice it should but 50 links from 50 different domains often listed in dmoz and the google directory carries enough weight.
This is a brand new development. I'm seeing it in multiple niches. Clearly a link buying service of some type.