Thanks Dan, I will start the terms of use trawl, and send PMs out where appropriate, when I get home. Shouldn't complain, after the work that you plugin people have saved me over the years - not to mention the things that I simply wouldn't be able to do at all! Fingers crossed there aren't too many restricted plugins though..
Actually, do you think the index page might have an icon range for the copyright/terms for each plugin? (Same icon, different colour according to restriction status?) Probably a whole new can of worms...