polymorph:
I don't use quotes. Quotes mean that you are, well, quoting someone. Or that you mean it ironically, which may be the case here.It should -not- be used for emphasis just because someone is using plain text and cannot change fonts or font properties. I prefer to use dashes or caps, in those cases.
When using plain text, the convention for emphasis is either word (indicating underline) or word (indicating bold). Caps is 'shouting' and should be avoided. DON'T YOU AGREE? 