Graph Analysis

So why don't more of you /prog/rammers write software that trades stocks or currency? I've decided I'm going to try trading currency, and I set up a scraper to put exchange rates into a data base every 5 minutes.

Maybe I'll find out otherwise when I start the software in a few days when I have actual data, but isn't it just graph analysis?

And if it isn't, couldn't you just set a genetic algorithm on the market or something?

>>12
What sort of software will this be? Perl, Python, .NET, etc?
What sort of DB do you have in mind?
What the dicks does that matter? Those aren't the things that will stunt any form of development of this kind of stuff.