I'm currently working on a fundraiser for the American Cancer Society and have asked all of my family and friends to make donations on fund raising website (hosted by ACS). Beyond that I've also asked them to tell their family, friends, and co-workers about what I'm doing, in hopes that they'll contribute as well.
For my family and friends, it's pretty easy, I see that they've made a donation and I call them or write them an email saying something along the lines of "thank you so much, you're awesome and I love you!" But I'm kind of stumped now that friends and co-workers of friends, etc have started donating. I want to send them a personal note letting them know that I appreciate their contribution, but I don't want to cross any lines as far as formality, etc. since I don't know the person personally and especially in the case that it's a co-worker or boss.
Some suggestions would be greatly appreciated!
(also if you'd like to donate so I can practice on you, check out http://sonotcool.org/j
to find out more and get a link to donate on the ACS's website... :-)