Actually i think this app is really meant for more casual users. I’m sure the maniacs and geeks want full featured software. Update - after testing out the photo displaying, i take back what i said, i think this app is great for professional photographers who want to show off a portfolio and dont want people ripping off your pictures. As a reference check out how my gallery is displayed (I disabled downloads, but there is a feature to enable it) - http://thamkengyew.photoshop.com/

Anyway yes adobe photoshop is FREE and ONLINE (web based). 

What i like about it (photo-editing aside), is this little piece of software that you can download as a desktop application and then queue up your images to be uploaded to photoshop, especially when your internet line is shaky. I HATE it when my 50 pictures stops at 20-something then i have to figure out which image it stopped at, regroup all the files etc.  So its kinda like flickr with advanced photo-editing. 

It is a very flash intensive site but it loads fast enough (i’m testing this out during peak work-hours). Having tried the app, I have to say the user interface and flow isnt intuitive and smooth. I have to read each and every button to figure out where i want to go. 

The photo editing options are very advanced and I dont know enough to evaluate it properly but heres a screen shot.

PROs - photo uploading is great. very advanced photo editing options for a web app. Great gallery display and navigation, definitely beats flickr, multiply. 

CONs - lousy user interface. really lousy. 

So if you like online photo editing, signup