Wait, how many things do you have to pay for at SA?
You pay a fee of 10 dollars to post
You can also pay an extra 10 (or is it 5?) for a PLATINUM account that removes the already non-intrusive ads and gives access to the forum archives.
As long as you don't get your ass plutoed, you don't have to pay ever again.
It's worth the tenner just to read, in my opinion. At any given time there's something hilarious or interesting going on. The forum is pretty strictly moderated and has a ton of arbitrary rules, so you have to lurk for a while before posting.
At any given time, a few of the forums are public for browsing, I believe.
I am Private Southbound. My name got changed during a particularly nerdy debate about the quality of Star Trek V. And then it got changed again during a particularly gay and nerdy debate about what was considered canon in the mythos of the Candyland universe.
There are also other things you can pay for. Like having someone's name and tag changed and shit, or paying for an ad banner.
I don't know if the whole "we have a huge forum to run!" excuse can be used here. I mean...not allowing people basic features like avatars...I don't know.
Oh it is totally a cash grab and I don't think they'd even deny it. You have to pay to get unbanned. The quality of the forums is so good though. I rarely post there (I fins it tough to keep posting up on more than a few forums), but it's awesome to read.