Quote from goldenarm:
That is the proprietary trading arm of E*Trade, formerly known as Tradescape and Momentum Securities (before E*Trade acquired them). They primarily trade Nasdaq and they have a good software platform (Lightspeed). Professional outfit (at least when I traded there from '99-'01). Commissions are low (0.4 cents per share) but then again, so is the payout (5%-50% depending on ticket average).