Flickr is a gorgeous, elegant site and definitely the best photo sharing site out there.
If you like Flickr and haven't tried the Flock browser (flock.com), it's definitely worth a look. You can integrate your Flickr friends photo feeds into the header of the browser, and get alerted when they post new photos. Flock also makes it really easy to batch upload your photos directly to Flickr (it also works with photobucket, i think).
