If your microblogging activities are limited to the Identi.ca and Twitter services, Gwibber might be overkill for your needs. In that case, Pino is exactly what you need.
Tired of slogging through Facebook's interface? Sick of seeing the Fail Whale? Cut through the cruft and simplify your social services with Gwibber -- a microblogging client for Linux that supports Identi.ca, Facebook, Twitter, and more.