i know them they also payment processor but not much popular they u can use them if you wan't to gamble online
We used them years ago and they were excellent - just with high fees and a long wait to get the money - however they run a tight ship and have great support.
They have been around for ages and are one of the most trusted payment processors and Acquiring banks arround!
If your based in the US authorize.net is the solution, if you are in Europe RBS Worldpay is better, actually auth.net is USA only!
I used WorldPay for my online video games community and they were just awful. Not because they were bad people but probably that they spent all day dealing with nasty people in the adult industry and gambling. I then used http://www.anaxstar.com and they were great until they raised their prices and i just did not want to pay 30% more for a service of that nature.