When you surf on the Internet, you will come across listings of various stock trading companies available in the market, ranging from full service brokerage firms, discount brokerage firms to deep discount firms and online brokerage firms. Needless to say, they provide different levels of financial services at different costs. Given the wide array of offers available, it is important that you do some homework so that you are able to distinguish between the firms based on services offered and fees charged. Again, there are some answers you should seek before making your decision.