Invest the amount that you feel comfortable with, and can afford. With most stocks in Penny Land, an honest person will tell you to only invest what you are willing and can afford to lose - kinda like going to a casino. But I think we all know that WDRP isn't like any other penny stock. I beleive it is possible to turn your $5000 (200K @ .025) into $200K within a reasonable amout of time (1 year), maybe much sooner. Pennies, if they have the right product and momento can shoot up really fast. Good luck and welcome aboard.