Thanks. I had assumed there were people here, it was more that I couldn't find my posts, combined with text saying posts were reviewed before posting, and I also added a post asking how long it takes for posts to be posted, which didn't get a response (which made me thing it hadn't been posted) (did that make sense ?). All that had me thinking my posts weren't getting posted. Having found them last night (after posting "is there anybody out there") has clarified all that and why I wanted to delete a couple .You cannot delete your threads.
And there are some folks here, I would suggest looking at the New Posts feature and you'll see where the action is on the site.