Ah, I should have looked through the comments before posting my own comment to similar effect. The mercer street taco bell in lower Queen Anne (aka uptown). I pass by it on the D line whenever I take my kid downtown, but we've never been there before (with Dick's a few blocks away I wonder how they survive).
There should be a term (if there isn't already) for the phenomenon of bias or flat out incorrect conclusions caused by sourcing whatever data happens to be easy/convenient rather than a complete or more apt data set.