I recently tried affiliate program from the olymp trade broker. First of all I was hooked by the approach Kingfin used for promoting their services - an interesting website, which is well-developed and provides with necessary information on how affiliates can benefit from working with them.
Secondly, range of programs itself is standard, but at the same time Revenue share program has quite a high payout percentage, up to 60%!! It's awesome.
And thirdly, there are tons of promotions and bonuses, don't say it's a flaw, I beg ya.