Is location really the key piece of data differentiating "pictures from Bob's wedding" from "the universe of pictures", though? I would think some concept of tagging that went beyond mere location would be far more useful.
80% of the time (walking down the street, sitting in my office, etc.), I don't care about pictures that were taken around me. For the 1% of the time that I DO care, I can probably easily name the thing that I want to see pictures of. Location is perhaps a handy filter for "tags that might be important to me", but it's hardly the sole determiner, or even a major factor, in whether any given picture will be one that's interesting to me.
80% of the time (walking down the street, sitting in my office, etc.), I don't care about pictures that were taken around me. For the 1% of the time that I DO care, I can probably easily name the thing that I want to see pictures of. Location is perhaps a handy filter for "tags that might be important to me", but it's hardly the sole determiner, or even a major factor, in whether any given picture will be one that's interesting to me.