I want to go beyond simply saying +1 here.
You have no clue how many times I've asked "Who's your manager?" (at stores/restaurants/call centers) only to have someone come running over to me as though there was a big fire going on. People rarely give compliments... It's super-unexpected when you do.
Personally, I believe in the "brownie point" system. Before you can SPEND a brownie point, you must have EARNED some. You don't earn points by being negative, and you shouldn't spend more points than you've earned.
Yes, Shapeways has its faults. But, I still think they're on the positive side of the ledger.
Or, as I am often known to say when people want to congratulate me on a task well done... "Don't tell me.. tell my boss." <GRIN>