Screenshot by Matt Elliott/CNET

Google's making a change to YouTube that's already been underway: YouTube annotations are being discontinued.

The reason is all mobile. Annotations use has dropped 70 percent on Google's massive video site, according to a blog post Friday announcing the change. Instead, Google's recommending everyone use Cards and End Screens to handle anything interactive.

Annotations began back in 2008, before the mobile shift. According to Google's YouTube Creators blog post, 60 percent of all YouTube traffic is now mobile.

After May 2, you won't be able to create or edit YouTube annotations anymore, but users will be able to delete existing ones.

Speaking of which, if both annotations and cards annoy you, here's how to turn them off.