I use Robinhood some, easy buying execution and selling, no shortselling and no triggers

Do they allow margin accounts yet?

not good, i have used it, it takes 3 business days for trade to settle, no margin all cash and a second or two delayed view (atleast what I noticed on my phone)

I use Robinhood for longs. It is very limited. You have a cash account and has a limited amount of Stocks to buy from. To get past the delay, I would set a limit order. That way you know what you are getting in and out of the trade at. It has a clean look and is set for the younger generation to get into trading. You will have to do your charting elsewhere. All in all, it is very limited. When they get the ability to have a margin account so you can short, it will be a lot better.