I find myself really liking Flickr more and more. I'm really pleased with the features and how usable, and very importantly, how extendable it is. You can find me on Flickr. However, one area where Flickr falls really short is finding your friends. Sure, if you have a GMail or Yahoo! Mail account you can find people via that, but what about everyone else? Enter Flickr Friends!
Flickr Friends is a great little site that will take an address book export (including a vCard dump from Leopard's Address Book) and find anyone in your address book that has a Flickr account. It's great stuff and I was able to connect with a bunch of friends right away.