Champions Online will have Twitter added via an in-game feature set when it releases.
Cryptic is currently testing the functionality of the service, according to the official website:
“We’re really excited to get in-game tweet testing out to our beta players. This feature is in initial testing stages and will most likely have issues. Beta players, please keep in mind that you are still under an NDA while testing this feature!”
The saturation is almost complete. Soon, there will be Twitter options included in caskets and voting booths.