I would imagine you wouldn't be able to live large on the money or anything but do programs like "google ads" an other affiliate advertising pay? Is it worth having all this additional stuff on your site?
Worth it? Depends. Do you have a portal? If so, go ahead and use Google ads. If it's a studio's website, then obviouslly don't. Yeah, I've used FastClick before and it paid on time. I'm supposing that with the reputation Google has, they'll pay.