Flickr plugin that will display photos from multiple group pools? [closed]

Flickr Gallery is WordPress plugin that goes beyond the basics and allows several options for searching and displaying Flickr photos. I couldn’t tell from your question, but if you want to display each group separately (i.e., a set of thumbnails from Group 1 next to a set of thumbnails from Group 2), then this will do the trick.

On the other hand, if you want to combine the thumbnails from two or more groups into a common list, it is very unlikely that you will find a plugin to do this out of the box, and the reason is this: The Flickr API does not provide for searching multiple groups simultaneously (neither the basic search nor the group-pool–specific search). The only way to make this happen is to aggregate the RSS feeds as Mike Lee described or use the API and combine the search results programmatically.