Sociology Central (http://www.sociology.org.uk) is a site aimed at AS / A2 Sociology teachers and students. If memory serves, it's been available, in one form or another, for about 8 years (you can check-out some past versions at http://www.archive.org/).
It's got about 2000 pages of information and receives between 2500 - 3000 unique hits each day (a proportion of which are spiders, but I won't tell anyone if you don't).
It's an NGFL-approved site. I'm not sure how significant this is, but I suppose they've got to do something for all the money they receive - speaking of which, I maintain the site in the spare time I have outside my "real job" (a term I use loosely) as an FE lecturer.
In basic terms it offers 3 main things:
1. Downloadable resources (mainly in the form of Notes): This section is a legacy from the site's origins as a cheap and cheerful method of distributing information in the days before the magic of browsers that could adequately display graphics...
2. Links: Reviews of web sites that contain something of interest to A-level sociologists.
3. On-Line resources: This section has developed as the power of browsers has increased and offers a range of resources that can be used on-line.
