Ask HN: Social aspect to financial markets and stocks

I like the idea of focusing on negative stock recommendations. There have been studies that show Wall Street research analysts have a positive bias in their recommendations because they do not want to ruin relationships (investment banking, capital markets) or potential relationships with those companies that they rate poorly. So, if you did a startup in this space, then you wouldn't have to worry about that.

Again as murtza said negative sentiments are often more correct than positive.

The only problem is when it comes to monetizing the thing, the hurdles in legal terms then become huge and costly.