I've gotten mostly positive comments since I've had my Ninjette (about a month).
This one kid I know who's into bikes (currently has a 1000 cc Suzuki) is the only one with the sarcastic BS, calling it "cute" and stuff like that.
All my non-biker friends say it's a nice bike. This one time some random dude came up to me and he was suprised when I told him it's a 250. He said it looks bigger than that. I told him I just started riding so he didn't give me sh*t about it.