Instead of closing your service, may I recommend switching to payplug.com ? Started as a small smartup, now bought by a french main bank chain but has english documentation, very clean API, easy to get support, low fees. Easily handle refunds, payment link, payment page integrated or separate, 3D Secure, subscription/recurring payment, etc etc ...

Been using them for a few companies the past year and a half, and migrated more and more of my stuff over to them, it offers the simplicity and clarity of "stripe at the beginning" while already being backed and owned by a major bank (BPCE, 2nd biggest banking group in France). They don't have all the bells and whistles of current Stripe, but for most projets we don't need that anyway.

And there is no bullshit about random overnight account closure with no recourse.

I did a math minor at UCLA, and he taught the upper-division linear algebra class I took. He didn't like the book, so he decided to write his own lecture notes, which formed a book unto themselves. They're still available online at http://www.math.ucla.edu/~tao/resource/general/115a.3.02f/. If you ever have the itch to learn linear algebra, read them, they're quite excellent.

It was pretty obvious at class and obvious hours he was crazy smart -- but I had no way of knowing he was Fields Medal smart. But unlike other crazy smart professors I've had, he's a very gifted teacher as well. I mostly learned by reading the books and considered the lectures as an ancillary learning aid, but his lectures were very illuminating. I'm glad he now has a blog to teach a wider audience at http://terrytao.wordpress.com/, but unfortunately most of it is beyond what I can understand. If you're a math die-hard, be sure to read that.