I've had PayPal for over 5 years now and never a problem. They take credit cards from payers and bank account transfers, too. There is a charge if you have a commercial account, one with more than a certain number of transfers per month or a certain amount of money flowing. It's worth checking out and maybe some other members here will agree or disagree with my results, so you can have info and options, etc.
I think that accepting donations for open-source software or freeware is a great thing. I've given money to other programmers with PayPal links because I use their code and it saves me time and makes my work/life easier or fun, etc.
I say: go for it!
Steve
Never miss a thing. Make Yahoo your homepage.