It depends. If you're day trading (hint: you shouldn't be) and hoping to use the generated buy and sell signals, the quants and high frequency guys will eat your lunch.
I'm not sure how sophisticated the stock screening software is, but if you're just trying to build a diversified portfolio of stocks I say go for it!
You can create a list of securities you'd like to own and if nothing else make an educated decision with regards to the price at which you'd like to enter a position.
