FotoBuzz viewlet We've released a web utility called
FotoBuzz which allows you to annotate JPEGs using Flash on the client side and PHP/Python on the server-side. It's dirt easy to integrate into existing webpages. After including some CSS and JavaScript in the HTML head, all you have to do is add a single attribute to the image tag and it will do the rest for you.
The most obvious use for FotoBuzz is to label all the people in a family picture. However, there are much more practical uses for FotoBuzz. Here's a picture from
Anandtech's recent article about the upcoming
NVidia 6600 GT AGP card which has been marked up using FotoBuzz.

(People in RSS/Atom land: you'll have to visit
this webpage to see the viewlet in action)
One of the first things we decided to do with FotoBuzz is use it to annotate one of the screenshots for Gush.
Take a look for yourself.