Move around on the map, click somewhere to see pictures taken near that point. Each red circle indicates that there's some pictures around there. You can drag the map around, scroll in and out with your mouse wheel or the +/- icons on the top left, and can select a few different cities that I've got pictures of with the buttons below the map.
Things to be aware of:
The accuracy of all of this is dependant upon the clock in my camera being accurate. Usually it's close, but sometimes it's off by a few minutes, which can lead to a picture's location being off by a few hundred feet, but it may also be off by hours or days in rare cicumstances, leading to a picture's location being miles off, or (more likely) not being displayed at all. If you find any pictures that are given in the wrong location, let me know the URL of the picture in question and I'll see if I can fix it. An error of a few hundred feet isn't worth being worried about -- but more than that is.
When you're viewing a picture, the "Next" and "Previous" links still apply to the picture in its original folder, not to the search results. So to look at the next picture in a list of pictures taken in a certain place, click "Back" and then on the next picture.
Each red circle indicates an area with some pictures, but due to my need to keep the number of circles down (the page performs REALLY badly if it gets too high), I had to make them for clusters of pictures rather than individual pictures (with bigger circles indicating more pictures), and the size of the circle doesn't scale with the map. In any event, the circles give you some suggestions of where to click, but they're not the only place you can click -- you can click anywhere you want.
Even as it is, the number of red circles is higher than would be ideal, so this performs better under Chrome than Firefox, and I haven't tried IE yet.
So far, from what I can tell mobile devices don't really seem to let you "click" without something to click on, so this page probably won't really work on them. Not sure how I can fix this.