Well, I tried to sign up with them a few months ago because I wanted to try out their new software (was interested in the automated trading features).
The people were the worst of the salesmen type and insisted that just to toy with the software you must open up a 75K account (could have been 50K, don't remember now for sure).
Their attitude, pricing and lack of ability to kick the tires (in addition to many, many negative comments from the Silicon Investor tradestation forum) led me to drop any thoughts I might have of doing business with them
JB