I have also added another method again totally private compared to Paypal.
Using SL currency.
The in-world multiverse Secondlife.com allows you to create an avatar free - you download the program install it and join and wander about - its a fun place and has everything your heart desires and more! You can by virtual SL currency called Lindens. and then 'tip' or pay other characters in-world.
You link a regular bank card or PayPal to your Second Life account. but you pay some abstract avatar (name available on request see page) and the only thing that shows up on your statement is you bought Linden dollars in SL after that the paper trail goes cold
and all I would know is an avatar sent me some lindens. That's it The avatar in question has a non-trans related identity even.
We have counselled a number of transpeople in Secondlife and this option of extending again into SL as a virtual trans island or similar still remains beyond one-to-one support.
The page has been altered now to accommodate this info.http://www.transgenderzone.com/donate.htm