BlueHackers is simply an initiative or movement, and has been adopted as a special interest group of the Open Source Developers’ Club (OSDClub, Inc) which is an Australian registered non-profit organisation (most well-known for the Open Source Developers’ Conference).
Initial costs (such as for the domain name) have been covered by Arjen. Some funds were gathered through donations given around Linux.conf.au (Hobart Tasmania, January 2009) when handing out the first laptop stickers, this was used to recoup the sticker printing costs and some excess remains. We printed a huge new batch of stickers in April 2010, again part-funded by Arjen. We don’t require a lot of funds to do what we want to do!
With all that in mind, if you do wish to make a donation, it will be gratefully accepted for the stickers and related stuff. Should the project come to an end, all remaining funds will be passed on to a suitable organisation (such as Beyond Blue). The BlueHackers funds are maintained in a dedicated Paypal account, separate from any individual and with oversight by OSDClub.
Using this button, you can donate using Visa or Mastercard, from your Paypal account, or a bank account linked to your Paypal account. Note that credit card donations incur approx 2.4% fee on the receiving end; while relatively small, obviously donating through an existing Paypal account (if you have one) is more efficient. Thanks!