Online Graphic & Photo applications...

Organise your photos online: Windows Live Photo Gallery.
Photo Gallery, part of Microsoft's 'Live' suite, is an application for photo storage and
online editing. It's very similar in use to Google's Picasa below, but seems notably faster
and adds a couple of extra features. Which you choose is likely to depend mostly on
whether you prefer Microsoft or Google's web products.
Picasa.
Google's photo organiser Picasa also offers a wealth of photo editing, storage and
back-up options, and recently it's added face-recognition technology to its feature-set,
meaning you can tag 100s of photos at once. Whether it's better than the Live service
above though is still a matter of opinion.
Photo editing in a hurry: Picnik.
This is another online photo editor, but you don't need to register to use it, so it's great if
you're in a rush. Picnik is also fast, and has some more fun and arty effects than the
others.
Quick image resizer: Rsizr.
This is a simple online tool for resizing and cropping pictures. There are plenty of similar
sites on the web, but Rsizr's flash-based, step-by-step interface makes it the most
intuitive I've seen.