Yep, its also a pain when you are waiting for a legitimate needed text and cannot leave the group. I guess you can mute a group but I think its named something funny like "Hide Alerts". It is a tad bit beyond the average user because of a poor UI.

A friend of mine was in a business meeting on the same day UND announced its new logo and his phone went crazy. The person he was meeting with asked if he should answer it and he said "no, its a lot of bitter, bitter people and UND has no taste.". He did get the contract though.

Yeah, but usually there's at least one that's not using iMessage, which makes it a pain ;-)