Is there a percentage charge for me to sell my stock?

Ok, say I invest in a penny share buying 10,000 shares of stock at {content}.0007 and for some reason the stock market went crazy and by noon it was at . Now I am sitting on ,000 and want to sell it. I am using sharebuilder. If I go to the site and hit sell, Other than the trade fee, is there any sort of commission percentage that they get? Do I owe anything other than the .95 that they charge to make the transaction?

penny stock trades in huge volume but price of shares go down steadily?

Any Personal success stories out there trading penny stocks?

Please No Bull… Its a serious question, just looking for a serious answer, I know they are dangerous, and i know you can loose it all. Just want to hear from someone who has made money off them, I mean someone has to be when you see 600% price increases in a couple of days, Thanks!

When will WM stock trade again?

I’d like to try to unload some WaMu stock, even if only only for pennies. Any idea if/when I’ll be able to trade it again?

how do i find a good penny stock?

I get tired of all the web sites that claim they have the best list of penny stock, and all you have to do is sign up for their service. I would like to invest, but don’t have a lot of money. How can I find good penny stocks to invest in?