Inuvo is a great company - I used them on the publisher side before migrating my advertising accounts to their platform. If they didn't pay, I wouldn't have dumped money into the merchant side of things. I can vouch for these guys - you will get paid. They're good about making sure advertisers approve commissions (if manual) on time and drop the ones that default. There aren't many merchants with them yet, but at least in part, it's because they are extremely selective to make sure everyone gets paid.