Apart from special promotions often accompanied by a TV commercial, and with higher wagering reqs than 20x, I don't think I've seen more than a single 500% welcome bonus offer. And that casino I would never recommend (or name).
Could you PLEASE STOP starting threads in the Introduce Yourself forum? This is the third or fourth time I've had to move your threads. If you keep it up I will have to place your account into the moderated users. Please pay attention to the forum description before you post. Thank you.