The twist is that Identi.ca is an Open Source, CreativeCommons framework for a distributed network of federated microblogging services.
This means that Twitter must now get it's act together, fast, or it will die.
Why? Identi.ca has (or plans to have soon):
- URL shortening
- Cross posting to Twitter and other services
- Distributed/Federated: I put a customized version of the software (called Laconi.ca) on my server, you put one on yours, we both get friends on our local copy and any other versions around the web - and everyone can communicate with each other just like we were using the same service from the same provider
- No Failwhale