Headset abuse is no laughing matter. It would be impossible for me to count how many times I've attempted to play with friends online only to have the session spoiled by someone who disregards the sanity of his fellow participants. I'm not the only person who's suffered - no; this ludicrous offense takes place every day, ruining games for players everywhere. I've seen many forms of microphone cruelty, and my goal in writing this is not to complain, but to educate.
(If you can identify with any of the following voice-chat desperados, you may need intervention.)