Perhaps this site doesn’t need much introduction to you webmasters. It is official website of one of the most popular forum script on the Internet - PhpBB. And I believe that it is the most widely used forum script with thousands of developers and modders. And this site has a very high PageRank - PR9. Ironically, it is also famous for selling backlinks which Google in turn decided to devalue those links. I think that Google may believe that PhpBB is already making tons of money selling their free and open source forum script to the masses, so why let PhpBB benefit from selling links. But it seems that there are people out there who still didn’t know that and are still buying links from PhpBB.

Oh by the way, PhpBB had just released the latest version of PhpBB and redesigned their website. So please go and take a look. I kind of like their new design. But I have never tried their v3 script before. My forum is based on the SMF script. Secure enough for me.