BUR #57009 has been approved by @evazion.
create implication bad_twitter_link -> bad_link
create implication bad_tumblr_link -> bad_link
mass update bad_link source:*pbs.twimg.com* -bad_twitter_link -> bad_twitter_link
mass update bad_link source:*.tumblr.com* -bad_tumblr_link -> bad_tumblr_link
The upload page now shows a warning and links to bad Twitter link, bad Tumblr link, etc when someone tries to upload a bad link from a site. This means that we need to create bad_*_link tags for every site listed in bad link so that we can directly tell people which links should and should not be uploaded for each site.

