John Scalzi is offering his short story "How I Proposed to My Wife: An Alien Sex Story" for free on his website, though with a caveat that he would appreciate donations. Half of the proceeds go to The Lupus Foundation of America.
The story was previously available only as a very limited edition chapbook from Subterranean Press, and that's a shame, because I had the chance to read the story earlier this year and I think it is probably Scalzi's best short fiction effort. Unlike his other published short fiction, "How I Proposed to My Wife: An Alien Sex Story" actually has a plot and follows a storyline and has a beginning, middle, and end (ya know, like a story). It's funny, too.
So, go to Scalzi's entry about the story and why he is releasing it to the wild, read the story, and then perhaps throw a dollar or two his way. Half of it will go to a good place, the other half will put bread on the man's table.