Identi.ca - Like Twitter But Open Source

Identi.ca is a new microblogging site which of course begs comparison to the mother of all microblogs, Twitter; however, it’s not merely a Twitter clone.

Rather, it’s open source and runs on a CreativeCommons license, providing users with a transparent service that preserves their autonomy, meaning that if you don’t like how Identi.ca works, you can take your own data and move it to another account or server. Also, friends on other microblogging services will be able to receive your messages. This will probably appeal to those frustrated by Twitter’s shortcomings—e.g. its frequent outages and downtimes. Identi.ca does stick with the classic 140 character limit. All content is supported by CC licenses. Currently, features are limited, but there’s definitely more in the works including, SMS updates, maps, cross posting capability, Facebook integration, hashtags, and media updates. You can sign up for a free account now.