Google image search is broken. Try it with any current event - you will not see anything relevant.
Using twitter and the connecting image upload services, PicFog shows pictures from twitter as they're posted, in real time. You don't even need a twitter account to enjoy the benefits - and you can filter by any keyword, location or twitter user.
Easy: just type in a search keyword to the appropriate field on the left-hand side, and hit search. If you type a city name to the location field, you'll see pictures from that location. You can always see the currently trending keywords on the left-hand side. Red means breaking.
To get you started, we've set up a couple of pages where you can start:
Earlier trending - the keywords that were breaking in the last day, week or month.
PicFog Capitals - the biggest cities in the world, at least by the number of pictures.
PicFog Mayors - the most active photo sharers.
It's mostly secret, ha.
PicFog is, using all the crap that idiots call HTML5, leverages the twitter API, shows pictures from twitpic, yfrog, plixi, twitgoo. Trend descriptions are powered by What The Trend and comments by DISQUS.
The PicFog bird is drawn by Gergely Göndöcs.
I profoundly believe there's more to PicFog than being just a part-time project, so if you're interested to hear more, drop me an email to firstname.lastname@example.org.