This is one of the very few threads about it out there in the ether - https://www.reddit.com/r/BitcoinMarkets/comments/8ecm6h/otc_what_are_your_experiences/

I don't understand why it's so rarely talked about it when it's a far more sensible option than an exchange for sizeable amounts.

Does the affiliate/referral bit mean you're planning to be bringing sales to them?