hmmm, I feel like that is "user-hostile", might not be a great idea for a nascent service. I think that if you're starting a new service you would want to pump it up, make every user feel awesome so they keep using it. you can incentivize upgrade with a carrot without punishing free with a stick. i.e. maybe a "premium" badge only, not the "free" badge. I dont anticipate anyone will be happy that their cheapness is being advertised