Yup, what Chris, Tank and Kathy said. Although I would add that I don't even like single name cameos in serious fic - if I'm the cameo! I think it's only happened once, and it was done as a thank you for a bit of help I gave the writer - but I've found that whenever I read the story, I cringe when I see my own surname. Just want to run and hide under the nearest blanket in embarrassment.
I should add that I certainly *did* appreciate the honour of being written into the fic - don't want to appear ungrateful!
Yvonne
PS - I couldn't vote in the poll, 'cos none of the options fit.