I just wanted to give three cheers for culanth.org, the website of Cultural Anthropology. It is simply one of the nicest websites I’ve seen for an anthropology journal/AAA section. There is much to admire, but first and foremost is the beautiful clean and minimalist design of their homepage. Having overseen the redesign of the SLA website (which has since gone through additional changes) I can say from experience that this is no easy task. Other things to admire on the site include:
They also have a great blog: [Heh, right now the blog's homepage is giving error messages, but you can link to the most recent blog posts from the top level of the site.] You can also follow them on Twitter.
Curated collections: “(formerly Virtual Issues) gather together five articles that speak to a particular anthropological or contemporary theme.”
What other AAA journals/sections have great websites that promote open content?