Well Andrew, perhaps the easiest and quickest is for you to download a copy of Wordpress, TanTanFlickr, and whilst you’re at it exec php. It will take you literally 5 minutes.
When you see TanTanFlickr, you’ll understand…real neat and handy little app… you’re images scroll allowing you to search by tag, select them, choose 4 different display sizes… pls take a look
I’ve seen other threads about Wordpress plugins being used and customised to work with EE. Wordpress behaves in some way similarly to EE… so you’ll be able to take a look at the php 
I use execphp to parse php straight out of the regular publish form, together with Simplepie and my del.ico.us posts…very very quick and handy.
THe aim is to have those same tools, but working on the more stable and robust EE… a Dream !
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