Many people use the micrblogging service, Twitter. Sometimes it is a good thing to get on at least a few of these services, to increase your popularity on the web and whatnot. Have a look at these Twitter alternatives:
5. Jaiku
Jaiku is a service very similar to Twitter in looks that gives you an “Activity Stream” where you can post messages and share “web feeds”.

4. BrightKite
BrightKite is a social network that is mostly centered around its use on mobile phones. Users can share messages and pictures.

3. Pownce
Pownce is a service that lets users files (pictures, videos, audio) links, events, and messages with either the world or your friends. Sadly, pownce was bought buy SixApart and was shut down. Still, it was pretty cool.

2. Identi.ca
Identi.ca is an open-source microblogging service that is similar to twitter in features and looks. It is based on the also open-source microblogging framework, Laconi.ca.

1. Friendfeed
Friendfeed allows users to post pictures, videos and messages. Along with that, It adds your activity form a wide range of other social networks to your timeline.
