virk changelogg According to mine this is not possible to users. In any case I just checked threads in which I was involved and I did not discover any possibilities to delete any of my posts.
pop Please don't. Deleting posts from the middle of a conversation makes the conversation very hard to follow. Rather, amend your statements in later posts, if necessary.
julie44 It's better to leave the posts because I often come back to read them afterwards, and I'd be sorry if they disappeared!