Well, 600 or so of them are now toast. Apparently Twitter only backups 3,200 of the most recent, so whatever I said when I first joined, um, er, don't know. Darn, all my pearls of wisdom have gone bye-bye :( But, checked out http://backupmy.net/ and backed up those 3,200, which only put me back to April of this year. I'm sure I've been tweeting since, um, er, last year. Anyway, before using it, checked it out at http://butyoureagirl.com/2009/07/23/is-backupmytweets-com-safe-to-backup-you-tweets/, which even has a video on how to use the application. So, if you tweet a lot, or want backup (I chose an HTML version) so you can go back and say, oh yeah, I did say that, it's helpful.