CainIV - 6:26 am on Jul 15, 2010 (gmt 0)

Google!

I guess it all depends on what you would call buying. Is doing a favor for someone else and getting a link classified as buying a link?

I don't see how linking out from good content, for example, to said pr7 website is any different than a link out of text from a popular blog, news article or .gov content piece - regardless of whether that link is paid or not.