I have had this site pointed out to me as yet another great site to host your pictures. What makes it so attractive is that they are currently giving away free Pro accounts (for a year).
So it may be worth you taking a look. I am a big fan of Flickr so have no plans to switch, but it is always good to have alternatives to keep everybody on their toes!
To get a free pro account all you have to do is upload a picture and link to it from your blog, so here is a link to test that theory out.