All seem to be operating through 3rd party providers such as DarkBlue or Commission Junction, etc?

I have to admit, its rare that i find a mainstream affiliate program (outside of adult, dating, software, etc) that actually runs their own affiliate program, most seem to use third-party affiliate networks for some reason.

So does anyone know what the deal is with this, how comes the vast majority of non-adult sponsor programs all seem to run their programs via a 3rd party vs. their own affiliate program site?

Regards,

Lee