But why impractical? That's just a wget loop, right? Or is it the sort part that you think is impractical? That's just a matter of writing a perl (or whatever) script to pull out the IDs plus upvotes, sort by upvotes, and grab the IDs. Then you can use grep or whatever to find which files those IDs wound up in and extract the comments.

I mean, that's more work than I'm going to do for a vanity project, but I could...