Are you or your friends using Amazon from time to time to buy something? And do you feel in the mood to support the Free Software Foundation? And are you using Firefox or it’s GNU-Pendant Icecat or weasel? If you can answer “Yes!” to all these three questions, then there is a little extension to your browser that will help the FSFE to get a little comission when you buy something on Amazon.
Otherwise there is always the option to become a fellow to show your support – because there are some Issues with Amazon and Software Patents which can endager you and your friends freedom in using software.