I had the opportunity to work with a on a website for an international Bahá'í youth conference.
From a technical perspective, the website was pretty trivial, however I was able to experiment with the Zend Framework's Flickr web service implementation. Caching the images and resizing them was a must since Flickr doesn't offer great options with the image presets (unless you ask people to upload at a special resolution... which is no fun!)
Building an AJAX slideshow that's driven off of Flickr meant I didn't have to write any upload-image code for the client. Furthermore, they can use Flickr pools during the conference to create an ever-up-to date gallery.
I'll be releasing this as a WordPress plugin that's a little more user friendly, however if you're doing something similar and need a hand, leave a comment and I'll send you what I wrote.
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Hey there
I was searching for dynamic form generation with Dojo and ZF and saw this 
Well if you could provide the portion of code that chaches and resizes the images would be great.
I’m writing an app. and that would be helpfull.
Hope to hear form u
AlanR