Just wondering how many companies use an affiliate program to increase sales and if it actually works and adds to their bottom line.

We use Post Affiliate Pro because WHMCS's affiliate module was kind of limited.

We haven't really done any advertising for our affiliate program though, so I can't honestly say having one is helpful or not yet because we only have a handful of affiliates so far.

All in all, I would say adding an affiliate program certainly can't be considered a bad idea. It's basically a means of advertisting that doesn't cost you anything unless you are selling your services.

Haven't done any affiliate programs yet. Not to say that we won't in the near future.