$50 Signup Bonus at ShareBuilder

ShareBuilder, the online brokerage arm of ING, is offering a $50 bonus to match a new account funded by at least $50. The only restriction appears to be time - the bonus will post after 4-6 weeks and cannot be withdrawn for 90 days.

I just opened up an account. I haven't used ShareBuilder yet so I cannot speak to it as a discount broker, but I do use ING Direct and love it. From my limited research it seems that ShareBuilder offers a competitive commission for purchases ($4 for orders placed on Tuesdays) although sales command a fairly high $9.95 rate. They appear to offer a wide array of ETFs, mutual funds, etc.

At any rate this bonus is a no-brainer. Take advantage!