Gary Farber points us to the fascinating Infinite Matrix site, "a journal for people who love science fiction as a literature of ideas."

The site is having a "Fundraising Festival" right now, with some pretty amazing gifts for those who donate:

Ursula K. Le Guin, Howard Waldrop, Vonda McIntyre, Leslie What, Jessica Amanda Salmonson, Michael Swanwick, Richard Kadrey, Joe Haldeman, and others have created one-of-a-kind artwork as gifts for donors. If you send us a substantial donation, you can choose a gift. Choice is on a first-come-first-served basis, so early donors have the largest selection. Check out the Donor Rewards that are available now.

The site concept is

a webzine featuring new science fiction by major writers, reviews by respected critics, and essays by original thinkers, including a daily weblog by Bruce Sterling, and a daily history feature compiled by Terry Bisson. It is kind of monthly, kind of weekly, and kind of daily. Check back often: we'll be adding new writers and columnists over the next few weeks.