Excellent post here about Terry Pratchett's big donation for Alzheimer's research:
http://www.alzheimers-research.org.uk/news/article.php?type=News&archive=0&id=205A fan has started Match It for Pratchett, a fundraising drive to, well, what the title says.
http://www.matchitforpratchett.org/There are a lot of different ways to give.
I hate to say it here, but this is even more important to me than political donations right now. Pratchett's books helped me survive a bad breakup and move and the difficult early stages of mental health treatment, by reminding me that life is too important to take too seriously. His narrative voice was the "friend" I felt I could always count on to distract me and get me through the night and reassure me that, yes, life's a nasty place but it beats the alternatives. I owe him BIG TIME. And this won't help just him, but potentially millions of people.
I can't imagine what it must be like to feel your own mind slip away day by day. I fear it more than any purely "physical" illness or disability.