The I Have A Friend Who Is Black thread deals with a real life situation with important political spects, and has given rise to several revealing posts.
The Boob Job thread is just starting, give it a chance.
In the end one never knows what thread will draw attention. As for rancor and bad feeling, the forum has moderators and over time they have become pretty good at removing posts/posters which clog up the arteries of debate and comunication.
There is a self-correcting mechanism on the board in that unless a thread is contributed to, it soon falls out of sight and out of mind, except for those that amazingly resurface months or years after they got sent out to pasture.