The idea of deleting never-active user id is complicated by the second ids used for IRC. A simple database query probably gets you the never-active ids without too much trouble, but that list would probably include most of the IRC ids.
I wonder if spammers would still create accounts and post such thoughtful messages as "Hi!" if we disallowed web addresses on player profiles (or at least players who haven't earned X achievements or global points)… or just locked player profiles entirely until they've played "enough" Foldit to earn that.
Please keep the web links on the profiles of legitimate players. I want the world to remember auntdeen, so I have a link to her profile on my profile page.
I like the idea of locking a player profile until some milestone is reached before they can update them. The restriction needs to be told to the players when they sign up; this restriction can be removed very easily, maybe by doing "X" number of tutorials, or playing "Y" number of puzzles.
Yikes. I forgot about initiating that post. But I made it over ten years ago, and I can't remember what I had for breakfast ten hours ago, so it doesn't surprise me.