Yahoo's Flickr the hottest photo-sharing sites around, and not just due to its unusually interesting name. For $25 a year, you can upload as many full-res footage as you need, as well as 90-second videos, for any one to see (a free account gives you the power to upload 100MB worth of photographs a month, but no videos).
It also permits you to explore other folks's footage in a selection of different ways. And now iPhoto '09 can upload right to Flickr too. If you are a Flickr user, an iPhone app that connects to the photograph site is natural extension.
Here are 3 of the most well-liked apps, all of which let you log into your Flickr account, view you photographs and those of pals and other users, you can take the advantage of the iPhone's location services, and even upload photographs right to your Flickr photostream.