Hi Nadya,
It may be that anyone can start a forum on Tek-Tips. It seem like I remember some ad about anyone can start their own forum for like $50.00 per month. I suppose, for example, if your started your own forum, you would be the mediator of it, and would have rights to delete threads, etc. The person that owns Tek-Tips my be the overall administrator, but probably wouldn't want to overturn a decision of one of his paying customers who is a mediator of a forum. I'm not sure this is how Tek-Tips works, but I think maybe it is.
Incidentially, I am having trouble finding some threads in which I have participated. One in particular in the "perl" forum has disappeared.
LelandJ