A couple of iStockPhoto Tools and Toys...

Taginator - Tool to help keyword tagging. Oriented towards people pictures mostly... looks like this:

Thanks to sethinacan for that.

Photoshop Resize Script - Add this to your PhotoShop Presets/Scripts folder to automatically find downsample sizes... see this thread

Very useful - when run in PhotoShop, looks like this:

And you can change the sizes as you wish!

Great stuff, thanks to theasis for this one.