At the moment, three systems for donationa are available
1) ROBOKASSA to where WebMoney is included + many other ways of payment
2) Z-PAYMENT to where WebMoney is included + many other ways of payment
3) Interkassa to where webmoney isn't included, but there are a lot of differend convenient ways of payment.
At the moment, donations are available via WebMoney can be done with the help of ROBOKASSA and Z-PAYMENT.