Thing 5. Flickr. I've had a flickr account since 2007 but admit I use it very spasmodically. I have more family shots on the private setting so you won't see them :)
I read that Tumbler and instragram have made severe inroads into it's popularity.

I'm in two minds about Tumbler, there's some great stuff on it but be careful with the kids, there's also porn as i found out.
I also have just tried Instagram. Kim had sent me some family photos she edited with that. It's amazingly easy to get some great results using the app. It's fun to play with and I'm sure I would once I have a smart phone.