Hi,
The most annoying affiliate programs are the ones that send all your traffic to one sales page which doesn't really sell but helps build the merchant's list.
They then nuture that list and make loads of sales on the backend, none of which you get a sniff of.
The other one if where you send lots of traffic to a big one time offer of $97 which nearly no one buys and again they are building an nice big list.
The good programs give are monthly subs whch keep paying month after month.
Cheers,
Sam