Have you heard of Picnik before? It is like Photoshop for Dummies! I say that with lots of love- I own Photoshop and can not figure it out to save my life! My friend Erica recently posted a Picnik tutorial. Read it here- very helpful! I read it and started playing and couldn't stop- every photo needed a little something.
I like playing with 1960's, HDRish, Cross Process, and Ortonish.
Here are some favorites...
Have fun with it- really cool site, free, no email registration even!