Umar Lee has an interesting series of posts on the Rise and Fall of the Salafi da’wah in the US. He writes about the spread of Salafiism in the United States in the 1990s, the subsequent schism which occurred in 1996 and the eventual decline of the “movement”.
Kashif, a British veteran of the Salafi Civil Wars, offers his well-informed thoughts on the issue over at his blog.