Only logical answer yet. But are his pages indexed in Yahoo or not? And are there some backlinks shown in Google? Are his pages indexed in Google? PM the keywords if you want me to check more in depth..
Yes, the pages are indexed in Yahoo and now it shows a link, too. But only one. About Goolge, neither any pages, nor links are displayed.
I bet you anything this is a simple affiliate site promoting only one NEW paysite. You can rank easily number one on a new paysite term just from getting some one-way backlinks which is obviously what he has done. Yahoo's link displayer is not in real time at all, you could have 30 hardlinks and yahoo display 0 for weeks.
Yep as someone else said above, 'noindex, follow' will still transfer link juice and keep the original site out of the indexes, so you can't find them He must be a smart guy.