Not yet. I'm not sure how I feel about paying 10 bucks to join a forum, no matter how cool the website is. Although, I might just cave one of these days, just to see what all the fuss is about. Plus, I've been getting the best free entertainment that the internet has to offer for about two years now. Might as well give something back.
It's worth it as long as you stay out of FYAD until you are no longer a newb. There's an immensely large amount of useful stuff at those forums. $10 is nothing man... not like it's monthly or even yearly... it's a one time fee of happy joy.
Lowtax is banhappy but as long as you don't break the rules you won't get banned. Oh yeah, and ALWAYS host your own images. People often forget to and get banned for image leeching. If you are an established member then you might simply get your custom title changed to something horrible yet hilarious instead of being banned.
Note: When registering, pick your title well because it costs $5 to change he again.
On Topic: Anticloud pranked a couple of people from those diaper forums and I'll post the links later although it gets pretty gross.