Wow man, where have you been? There's already Photoshop Express, which is Photoshop with limited functionality online!
https/www.photoshop.com/express/landing.html
Have you also seen Pixlr?
http
/www.pixlr.com/app/
IMO, Pixlr is better than PSX, if you're looking for versatility (ironically Pixlr's interface closely resembles Photoshop). Photoshop Express seems to balance power and ease-of-us though.
Have you also considered an open-source alternative, like GIMP? I really prefer editing photos on my computer, without relying on online connectivity to get stuff done.