We are using stormpay and have some good response from some clients... at an average about 3 accounts / week (we were only operation for the last 1 1/2 weeks).

So what do you think of stormpay? will there be a real market in it?

I think it's a good 3pp. However, the main problem is the fact that users would have to signup if they don't want monthly email billing. Otherwise, it's a good solution.