You could delete them yourself if you're the author of the thread. Click the first post in the thread and check the Delete box and click the Delete button. Whole thread goes away.
Handy for those off-hand, disparaging comments about rude and obnoxious Supermoderators.
Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen
When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig
Identity theft is not Fun