I have made over $400 with Sharebuilder I opened 4 accounts under one user name for me and my wife, with the $50 promo with various types of accounts (joint, indv., custodian etc.) I put in $50, in 6-8 weeks get bonus $50 and you have to wait 3 months to cash out bonus $50.
I also signed up for the $76 promo and got an extra $150 so I am apprx $550 for free