1 upvotes, 1 direct replies (showing 1)
I'm pretty sure it doesn't have *anything* to do with CSS, and it's certainly not a hack. You can have automoderator remove posts with reddit URLs external to the subreddit. The only issues with it are that you can't target URL shortener links to external subs specifically (URL shorteners are a bit of a universal problem for content filters), and it seems like overkill to target /r/-style links in most situations.
Comment by Mumberthrax at 06/07/2015 at 20:32 UTC
1 upvotes, 1 direct replies
many subreddits use CSS to hide the vote buttons when someone is using an NP link. sometimes only when the user is not subscribed.