Sorry if this is somewhere in the forums, tried a search and couldn't find what I needed.
I recall that for the 1.0x versions there was a Flickr or photo plugin, whereby you'd instal it, and a button would appear in the post editor. You could press the Flickr button and insert the URL of the Flickr photo and it would render the image into the post. (Ok, I'm not sure if I'm imagining this plugin or not, but I recall I had something like this...?)
PLEASE NOTE: I'm not referring to a gallery plugin, or indeed the photoblog plugin which creates a slideshow. I don't want a slideshow, just a way of allowing the user to render photos from Flickr or another photo collection site.
I did find this
but as it's from 2005, am wondering how useful it is for the 2.0x versions.