[joveian]

I think it is a really clever way to do advertising because it allows large companies to give them a bunch of money and at least get something for it that they can show investors while not annoying users much at all. This is most likely aimed at companies like Facebook and Google and Yahoo that have no real need for advertising as such but are willing to spend money to make their services seem even more identical to the intenet itself (for less tech savy users). The company would most likely already recognize that Firefox is important for people being able to actually use their services but the extra bonus of a link to their company could help convince anyone who is doubtful that they should spend money on open source browsers (and gives them an extra spot in the budget they could put such a contribution). Overall a good move on Mozilla's part IMO.