Toby, you hit the nail on the head - processing overhead to re-thumbnail a newsgroup every time would be insane, not likely. No, the images are pulled out, thumbnailed in bulk, and so on. If it is the same version of the software that I saw, you use the thumbnails to download the images only in bulk - no messages, no headers, no nothing - just bulk download. That software runs SERVER SIDE not USER SIDE. User only downloads and enjoy images, movies, and such and is not subjected to the actual newsgroup messages.
"A full featured server-side newsreader, that offers instant web-based access to newsgroups. DRN simplifies the news reading process by automatically decoding, downloading & displaying multimedia content for users."
Once you start editing, filtering, or simplifying the extraction of only images you have pretty much jumped the line.
Alex
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