Which is ur favorite ?

[_Miss-Negative_]

Twitter or facebook ??? jw, cause i'm bored ...

[Boubou]

Although they are both classified as 'social networking' sites. They have different goals and used for different purpose.

Facebook is used mainly for keeping in touch with friends.
Twitter is for much more about 'voicing out'.

From a marketing perspective, both are good to attract potential customers or promoting your brand.

If you feel bored about them , i recommend you to check out pinterest. It's the 'talk of the web' these days and it's considered as the 3rd social giant after facebook and twitter.