I can't say for sure how many affiliate companies are out there. It is so much and many of them just carry the name "affiliate", and have nothing good about them than the name.
There services are boring, and payment type are all full of corruption.
Some do not have a good number of advertisers and so as a publisher, you end up displaying one single advert for your visitors through out month a month, or even worse.
A proper guide is need here to aid you in your choice of affiliate companies to join. Yes, companies I say. You can join more than an affiliate company. However you need to read and understand the terms and conditions of service for the affiliate company you had like to chose.
Why don't quickly visit the forum and check out other pages on affiliate from the menu.
I will like to have my launch now.
It wouldn't take much time
Be right Back right ?