I've posted a few topics and been a bit surprised to see that people post spam in my post.  It's sort of nice to see it get bumped to the top, but I think the forum creator should be able to ban a member from posting, or delete posts that they have posted that are not relevant. 

You can ban a player from posting in your threads by blocking them, and you can delete your own individual posts but deleting topics altogether just because you've started them, and the ability to delete other people's contributions to a topic just because you started it are not available.  The latter would just be a disaster in terms of how open discourse took place here and the former was changed in recognition of the premise that once a thread has been contributed to it's owned by the community, not the thread's creator.

If you have an issue with a user in particular you can always report it as abuse and let the forum moderators deal with it on a case by case basis. 

Portland! Wooo! Wooo!

Block me and I block you. I'm a stone cold blocker baby.

I think the thread starter having the power to delete is a bit too much and would have a disruptive effect of promoting pettiness and bickering in the community.

Most threads are disposable anyway; let the mods trim the better ones for comprehension etcetera.

Yeah, it doesn't sound like a good idea.  But banning individuals does sound like a good idea!  Golden dog you are safe, no worries!

Perhaps the OP should be able to disapprove of a comment - without deleting it; or press the Forum Attendant button to draw attention to it.

The original poster does not endorse, certify or guarantee this remark. He or she cannot stand behind or be held responsible for it. The OP accepts no liability for any loss or damage arising from reading this remark.

Some discussion on deleting whole threads here and here.

One of chess.com's biggest blunders taking away the the power to delete your own topic feature.