I just subscribed to Asimov’s as an ebook from fictionwise.
See, I love Asimov’s, but I hate the way all those little digest-sized books start to cover every available surface of my home. This is much better, because they just go onto my PDA and are there for me any time I find myself in need of something good to read.
In other news, Scalzi has links to more free ebook goodness.