Political sites (apart from sexual politics, which are found in the Calyx, and environmental issues, which live in the Forest).
Disinformation
http://www.disinfo.com/
One of my favourite sites, sometimes described as the "search engine of the counterculture". It's hard to know what section to list this under, since it deals with various aspects of politics, art and occultism, plus conspiracy theories, eschatology, and other stuff too strange to categorize. But it's always interesting, and now has a free daily newsletter to keep you up to date on changes to the site.
Institute for Global Communications
http://www.igc.apc.org/
An online network for progressive nonprofits, formed by the 1987 merger of PeaceNet and EcoNet. IGC is the American wing of the international Association for Progressive Communications (APC); their Canadian counterpart is Web Networks (see below). The IGC site itself basically functions as a portal of sorts to its various member organizations and the issues they deal with.
Web Networks Community
http://community.web.ca/
Similar to the IGC, above, Web Networks is the Canadian representative in the APC, and provides web spaces and Internet services to hundreds of Canadian nonprofits. This site, the Web Networks Community sub-site, is a portal with action alerts, event listings, the ability to fax politicians, and more.
Znet
http://www.zmag.org/
Officially, it's an online version of Z magazine, but there's a lot more here that that. There are over 1,000 articles from the magazine online, but there's also a ton of sub-sites of various sorts, discussion forums, "watch" areas, search engines, a Noam Chomsky archive, and much, much more. You will never finish reading everything on this site, even if you spend the rest of your life trying.