I also want to unsubscribe from a thread (frankly because it's slowly driving me nuts). I don't at all mind seeing the thread title near the top of the listings (it's not THAT bad), but I do mind getting frequent e-mail notifications of updates! The trouble is that, although there is an underlined piece of text "Stop watching this topic" at the bottom of the page, it isn't an active link, and nothing happens when I click on it or hover the mouse pointer over it. I expect this has something to do with the embarrassing fact that I am still using Win98SE and Firefox 2.0.0.20, and therefore probably nothing can be done about it. But if help is possible, please help! If I get another e-mail on the topic of "Adding a third gender option", I'll scream like a girl, you see if I don't! 
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Age: 60. Sex: male. Gender: OK I give up, please tell me
AQ: 37/50; Aspie Quiz: 110/200 for Aspie, 82/200 for NT
Almost certainly not Aspie, but certainly something like it