Trying to get your entire reddit history, for example, is an obnoxiously difficult thing to do. It's impossible to get more than 1000 comments with the officially supported mechanism, leading people to do all kinds of strange workarounds to try to find older comments.
As a 10 year redditor, that really frustrates me, since I can't go back and see my early posts any more.
> As a 10 year redditor, that really frustrates me, since I can't go back and see my early posts any more.
I'd much rather they let you get your own history out and then make it impossible to get said history for anyone else (unless that person chooses to allow it).
(GP here) re: the second part, I guess I consider most scraping 'unwelcome'
To the first part: I would characterize certain scraping, usually behind an authentication wall, as malicious--though admittedly that's not the right word. An example would be scraping Facebook profiles to build a marketing list.
So, by 'non malicious,' i mostly mean 'publicly available data'