It looks like you're new here. If you want to get involved, click one of these buttons!
The guys at Cryptic have spilled the beans about the Alerts that will be coming to CO (apparently they are on the PTS server right now).
The Alerts will come in three different types: Grab, Smash, and Burst - each having a different setup and objective. It also appears that a character's Nemesis can appear in an Alert.
Have to wait to play it, but it sounds interesting so far.
Hell hath no fury like an MMORPG player scorned.