Talk to your friends and former colleagues and invite them to join NBSRT.  Each time someone joins NBSRT their name will go into a monthly draw for $100 and a grand prize equivalent to $500 at the end of July.  When a person joins NBSRT at your invitation ask them to put your name on the application form as the person who invited them to join and your name will go into a draw for the same amount.

More details HERE