The Convention I went to Summer 2007 had a 'visa/mastercard acceptpoint' for donations by bankcard. I think they've been doing this for a few years in the UK. Because the WTS is a registered charity you can even get a form when you donate that you can fill in and give to the Tax department, because in the UK you can get tax concessions when you give to charities. They even announce this to encourage people to donate.
Zico, it's always bothered me that 'Jehovah's people' are a charity, lol. What's that Scripture...? Matthew 6v26..? "Look at the birds of the air, that they do not sow, nor reap nor gather into barns, and yet your heavenly Father feeds them.....'' yet the WT begs for money, NOT just from its own members, but from 'Worldly' people too...why else would it ask for donations on the internet...