Is it good trading CFD?I heard that only foreigner can trade CFD due to SEC regulation. So is there anyone here really trading CFD?Actually I think this wont be a problem for americans to trade CFD since the CFD company is established abroad. I know that there are a lot experienced traders here,so want to ask for some advices. What is the advantage and disadvantage of trading CFD? Commision,bid ask spread,cost of carry,broker,safety of deposited fund. Any reply would be welcome.Maybe you didn't trade or know CFD before,but I think any comment is valuable for me,since I can be considered know little about CFD.