Your phone knows where you were, when. And says, "Here is where I was, what pictures were taken around me?" I want this information regardless of whether I was personally taking pictures.
Keeping a history of where you are can be done without much drain on your battery life. It can just log a location every few minutes.
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.
And what is the chance that random stranger is using Color? 0.000001%. So why don't you just walk over there and ask him to send you a copy? Social networking at its finest, in real time, at a conference.
Your phone knows where you were, when. And says, "Here is where I was, what pictures were taken around me?" I want this information regardless of whether I was personally taking pictures.
Keeping a history of where you are can be done without much drain on your battery life. It can just log a location every few minutes.