[mrkmcknz]

The StockTwits API is great if you want to build a sentiment based tool.

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.

[verdatel]

what are the legal hurdles you envisage? A simple recommendation based on social sentiment is what I'm thinking about.