Wrong conception. Everyone thought about AM hash the same way and they paid the price for it. Do not trust anything in the bitcoin world. If you gotta invest, spread your coins among multiple quick return services like you did for scrypt.cc. Make most of your coins when the price is low. When the price goes up, you wont most probably see many of these services around anymore...
"Investing" in MULTIPLE ponzis is like betting on every spot on a roulette table. I can understand how gambling on one ponzi can pay off much like a yolo bet in a casino, but "diversified" gambling is a sure way to lose.
Unless you're being sarcastic, in which case - well done.