I have a Flickr account, and I take plenty of photos, but I find myself not using it as much as I feel I ought to. Maybe Thomas Hawk's list of Top 10 Hacks on Flickr will help remedy that. It's a round-up of tricks, scripts, and sites that make Flickr more pleasurable to use, and though I'd seen some of them already, several of them were pleasant surprises. His #1 Flickr "hack" is Flickr Leech. Its tagline is "because paging sucks," and what it does is shows you all of the thumbnails for any user, photoset, or pool all at once. Very refreshing. That's just the tip of the iceberg--Hawk also points out some great Greasemonkey scripts, some web (and desktop) apps, and more for your Flickr enjoyment.