I've written this little hack that searches for people who travelled approximately along the same path as you. It looks at date/time and geo information in your photos and searches for people with similar photos.
@_sarchi: thanks for trying it. I've fixed the layout problem for your resolution. Didn't understand your comment about being faster than Yahoo! though. I've made a gmaps version too if you're interested.
@purplewon2000: well, it would be good to know wouldn't it? The stalker becomes the stalked :D