I think you need to narrow your search parameters a little bit here. Just as there are thousands of sites about technology, so too are there thousands on which

I think you need to narrow your search parameters a little bit here. Just as there are thousands of sites about technology, so too are there thousands on which you can discuss finance. HN is unique in its potent mix of entrepreneurial minds and technical folks; what kind of analogue would you seek for finance? A particular niche? Or just 'real cool people'? Zero Hedge is nice, check out also other blogs online that you might like, and at least follow along in their community :)