YMMV
From Encyclopedia Dramatica
Common abbreviation for Your Mileage May Vary. Often used in forums, usenet, and IRC when giving a personal account that others may disagree with or one that goes against the majority opinion. Typically marks a pretentious asshole, someone making the entire story up, or an apple fan.
[edit] Examples
Prima: I've always found Muslims to be kind, generous, and accepting of outsiders, but YMMV.
Prima: Hitler always struck me as a nice guy. YMMV.

