Use Ping.fm to Update all Social Networks at Once

Ping.fm was created with the intent of making it as easy as possible to post updates to multiple social networking sites simultaneously. The idea of posting the exact same information in two places seemed a bit tedious, so Ping.fm was born.

Post Updates to All your Social Networking Profiles from One Place, All At Once

Ping.fm is a free social networking and micro-blogging web service that enables users to post to multiple social networks simultaneously. Making an update onPing .fm pushes the update to a number of different social websites at once. This allows individuals using multiple social networks to update their status only once, without having to update it in all their social media individually.
> Link : Ping.fm
Ping.fm groups services into three categories – status updates, blogs, and micro-blogs – and updates can be sent to each group separately.

Thanks Snaphow for the tip