I'm in this camp as well (well, I've got my own perldityrc that makes things like I liked them (which of course is contrary to the official settings at $work so I've gotta have two different copies so I can actually look at things sanely then broked them before checkin . . . :)). Very good point about the state of the code revealing state of mind; inconsistent indentation or ZOMGWTFBBQ complete lack thereof can point out stuff ("This entire block is outdented . . . maybe it's a pasteo").
That being said though, I can agree that it'd be a nice-to-have if there were (say) a "Download Tidy'd" link which would save me the trouble of cutting and pasting into a new document and then having the editor run-shell-perltidy over it manually. Less steps == less effort to look into problems == easier to help == more likely to bother actually replying.
Maybe some enterprising Greasemonkey guru could crank out something that would do something along these lines (not that'd do me any good since I primarily use Safari . . . ).