People are mostly very nice, and I always say hello. I'm laid back, so I don't mind. I think if people watch the show and want to say hi, you've got to be nice.
I don't understand people who won't sign autographs or have pictures taken.
The most annoying thing I found was all the people pretending to be me on MySpace and Facebook. I'm not a member of either, but apparently there is an 'official' Nikki Sanderson MySpace page, complete with rants about how terrible identity fraud is, which is ironic.