Twitter turned eight last week, and a tool that locates your first tweet surfed that wave, becoming popular among users of the microblogging service. Following on from that is First Follow, a service from Socialrank that tells you the name/handle of the first person who followed you on Twitter. Personally, I think this is a lot more interesting than your first tweet since it isn’t something that you are in control of. In my case, it’s a way to remember_the person who introduced me to Twitter — thanks @rashi!