My Frenemy Mr Silk says he thinks you need a name, photo and have some openness to be his Twitter frenemy (or follower should I say). I'm not sure if I have a criteria like that. I usually just add people on Twitter if I know them. There's a lot of old colleagues starting to use Twitter which is making it a bit more normal. Like Craig, Narelle, Farimah and Lisa. I think with the less geeky types beginning to use Twitter more it's becoming easier to see that this kind of social networking technology becoming mainstream, even if Twitter itself might not.