F is for Flickr.
I love my flickr account!
I have a flickr pro account, which means I can upload as many photos as I want. I love organizing and tagging all my photos, too. It's also neat to look at your activity on your stream to see what people have been typing into google and other search engines to come across your photos. And, it's handy to detect photo thieves.
A while back a map website (Schmap) found a photo of mine (of the Poe museum) on flickr and used it on their website for a tour of Richmond (with my permission & credit of course)..pretty neat if you ask me.