1: Anything you want. You name it, I am sure I can arrange it.
You can trade, battle... Post (duh?)
Talk to people about pokemon, get help about anything. Read through the forum, you're bound to find something that will help you in some way.
2: It was about 8 months ago... Maybe longer. There are currently 107 members, you are the newest.
3: Not unless I or another admin/mod recommends you really. I don't trust just anyone to be able to edit/delete the site.