Yet another site has lost its lofty PageRank, and for good reason. phpBB is great (I use it), but the obligatory link from any installation of their forum is not a vote for their site. Yes, using their software could be seen as a vote for the quality and usefulness of the product - but that’s the product, not the site.

The question remains - was this adjustment done manually, or is it part of a new and improved algorithm for spotting links that are part’n'parcel of installing free software?