Flickr Advanced User Guide
While I like some of the online photo sharing alternatives, Flickr remains my default for uploading photos (when I remember to upload them, that is). There are a ton of ways to make Flickr more useful, including assigning yourself a human-readable URL, uploading photos via email (which makes it easy to upload via cell phone) with varying degrees of privacy, email tagging, posting to multiple blogs and a whole host of options for sharing photos with other people. Lifehacker recently put together a reasonably comprehensive list of features designed to maximize Flickr functionality. The advanced email tips are probably the best of the bunch, offering some useful tips that make uploading via cell phone a workable alternative for camera phone snaps.