Twitter recently changed its default user avatar--you know, the one that pops up if you haven't uploaded a picture of your own--to a cute little bird icon. Unfortunately, then the service got a little bit overzealous and started chomping up existing users' photos, replacing them with the defaults. Oops!

"Many people in my timeline suddenly have default user icons," Twitter engineer Alex Payne posted to his Twitter account on Thursday. "This is probably not intentional. I have inquired with colleagues."

By the time the end of the day rolled around on Friday, there were still plenty of missing user avatars.

More: http://news.cnet.com/8301-13577_3-10356909-36.html