Not only that, the service also thinks it has got a major coup, with "superstar" Instagram user Richard Koci Hernandaz uploaded his vast archives of pictures to the service (although he is yet to delete his Instagram page).

BBC: Can Instagram bounce back after terms of service storm?

Some Tumblr users are seeing their pages replaced with several dozen duplicate posts from a known hacker group, warning that deleting said message will delete the Tumblr page in question (it's unclear if this is actually true, but seems to be false in our testing).

ENGADGET: Hacker group rewriting Tumblr pages into a racist, anti-gay screed (update: Tumblr says it's fixed)