This is actually a great idea to promote your twitter account and at the same time do some good for the others. There is a list of Charities already available on their website. It is new and the total donation so far is only $40.00 donated by 4 peoples. Nevertheless it is still a good website for a good deed. If you have some extra cash in your paypal account. Start now and do some donation to the unfortunate.
If you are in need of help and would like others to donate to you, feel free to register yourself and you might get yourself some extra hand to help you out.
Twit your donation now! @Twitter Donation