If you are talking about the little antenna icon next to people's names, the red one is always flashing. Acutally, green means that they are on the main portion of the site (turn-based games, forums, groups, etc.), and the red means that they are on Live Chess and only on Live Chess. If they are on both, or were on both recently, it will be the green icon with the word "LIVE" on it.
RED LIGHT!!
Sort:
ok ... so i know the green flashin light means you are online and no light means u are off line ... but what does the red flashing light mean??