[stuartjm5]

That is definitely one way to approach it. eToro (copy trading) already exists and commonstock is similar - you can see someone portfolio and % holdings but not their $ amount. We are focused on investment ideas, social engagement, and building a community.

[marketgod]

How do you know the person's ideas are useful is my issue. With Reddit you have all sorts of comments, and you have no idea if this person is posting random ideas, or if they are actually good at what they do. The issue is who is going to engage here is my concern. StockTwits has it by stock which works and creates a conversation. Here the main page has daily stories, so the conversation has to occur right away.

Equating posts (news) with a change in price is not an investment idea. Most of the time, the news is counter to the way the stock moves in the short term. I think you need to find a way to differentiate yourself. The UI is nice and all the info available is great however I think you need a something to provide to your end user with respect to engagement/community, but news stories die so fast it's hard to create a conversation around that.