Twitter

Twitter isn't a 2.0 tool, is a social network, where you can write anything to people who follow you.

Twitter allows you to comunicate with people that maybe you don't know but they're interested about your personal live.
This tool is very common in the world of youtubers to comunicate to subs what videos are they going to upload or other type of things that the subs can help.
You can design your background and it's a plus.

My personal twitter: Twitter de Sergi Valls

https://twitter.com