Hey, here's a great way to generate a buzz and make customers happy.... give away your product for free! Opera Web Browser is now free, no ads, support available, etc etc. Far as I can see no catches. They have put a page up with their reasons, though it's a little scant on details. As far as I can tell this is a result of meeting the milestones of use, and the goal of a world of opera users. Might have something to do with IE7 "just around the corner" (for various values of "just") as well?
Opera is a pretty slick program, tiny, with a built in RSS reader, mail client, and a bunch of pretty funky features. Oh, and lightning fast too. I don't know if this will move me away from my beloved Firefox though, we'll see :)