1. As was pointed out already, simply report the post/thread in question and leave a brief note. One of the Staff should get around to it sooner or later.

2. As to who we are/how to identify us, there here is a link (found at the bottom of the User Assistance cluster of forums- Show Groups - Bike Forums. One blue star is a Mod, three star is an Admin, though the one star designation may change when the new Stewards thing rolls out.

3. You can delete your own thread by simply deleting the first post, but that can be viewed as poor taste by some participants in it. What you can't do is edit the thread title once you've created it- you'll need to request that.