It turns out that imagex had a security issue in it. The maintainer refused to fix it, so this module has now been unpublished. I built plupload for the same purpose - screencast coming soon!

This video shows how to use the Multiple Image Upload, Views and Views Bulk Operations modules to create a "multiple image upload and tag" tool. The View used in this video is attached as a text file which can be imported into your site using the Views import tool.