Back when they first started, actually before they started, they were advertising a 1% rebate on your volume of transactions. As a player, that appealed to me - heck, I'd love to get $50 back for every $5,000 I send through Neteller.
But somewhere along the way, they apparently axed the 1% rebate. So now, I just don't see what the advantage is for me, as a player, to use them instead of Neteller. If the 1% rebate had come to fruition, I would have used them, but as far as I can see, they now offer nothing to me that Neteller doesn't offer.