MWillett.Org covers a wide range of topics: atheism, memetics, global concern, environmentalism, socialism, world government. (I found this list here.)

This looks like an interesting site that questions many aspects of religion from many different angles. Unlike some other websites such as Internet Infidels, its hundreds of articles are written for the lay reader rather than for the philosopher and are easy to read. There are also forums for debate and discussion, and links to other sites of similar interests. I don't see any bookstores. But there's lots of bookstores listed on the website. There seem not to be all that many books written for this market at this point in history. Thus, if you know one bookstore you probably have the full list of available books. I think this site is worth visiting for its articles alone, esp. the article "Lee Strobel's Nonsensical “case” for Christ" by Kush K.

The site looks interesting. I'll have to bookmark it for a later examination.