I have an idea for a free service that I think might be valuable and would like to get others opinions. I currently have a site which does backtesting and strategy portfolio analysis. For example, you can run multiple strategies in a portfolio backtest and configure asset allocation, strategy rank, etc. The site is somewhat limited in terms of the strategies you can create. So here is my idea. Given the following page where you can configure the strategy portfolio of the systems creating within the web app: http://www.fasterbull.com/members/strategy-portfolio-builder.html?id=22 Would it be valuable to update the site so that you could upload raw trades in CSV format and one of the columns would indicate which strategy the trade went with. From there, you could configure the strategy portfolio analysis. Also, this could be exposed via a REST API so you could access the strategy portfolio analyzer programatically. Thanks! fan27