Currently you can only do this through PayPal, although in the future we may accept other means.
Why donate?
I could give you many reasons, the investment we've made, server maintenances, work carried out, bandwidth, translations... and although I really hope that these investments can pay off (someday :-D) through advertising or other sponsors, this is not the primary reason.
The donations are for us. For having made this project free and having given it to the community. For having made it and having put all our efforts in it. All our work is open-source.
You are free to use it. Free to earn money. Free to take advantage of it.
But if you really believe that it has been a useful contribution, a donation will be greatly appreciated.
You set the price. We give you STxT for free.