In episode 124 of Semantic Mastery's weekly Hump Day Hangouts, one participant asked about issues with YouTube and its upcoming removal of the annotations function.
The exact question was:
I'm curious if you have noticed changes on YouTube? I've been experiencing a lot of weird stuff. From having to unlock the account for suspicious activity, and all I did was up load a video. To a bunch of my channels being disconnected from IFTTT and have to go in and reconnect them.
One last thing is I see a notice from YouTube, there is no more Annotations after May 2!?