One of the largest quant-oriented websites is wilmott.com, run by Paul Wilmott, who says he’s an ex-quant now devoted to promoting, and demystifying, the quant field. I’m not sure if he’s still a practicing quant, or just runs his website and writes expensive books fulltime.
Anyway, you might want to check it out. Its most useful area is the forums section:
where various quant-related topics get a lot of traffic. I find a lot of discussions centered around Great Britain – Wilmott is from the UK – and, like all forums, a lot of endless, boring discussions, but you might find some postings interesting and informative.
Oh, BTW, if you liked my book, would you kindly post a kind word on their forums? I could definitely use some positive publicity. Many thanks!