What shits me is when people make a youtube video out of a piece of text.
If it's just a piece of text, make a fricking blogpost. I can read it ten times as fast as your video goes, and twenty times as fast as it will download.
I can jump back and forth instantly to the parts I want to reread. I can rescan a sentence I read that I didn't quite understand without reaching for the mouse.
Oh, and the comments will sound less like they were made by a 12 year old with Tourette's Syndrome.
If you have an animation, or a sequence of images that's more than a second or two (too long for an animated gif), then by all means, youtube it. But if it's just a way of fancying up some text, and putting it to bad music, forget it, it's a blogpost.
A youtube of a blogpost is a waste of time and bandwidth.
It's the present day version of what 5 years ago would have been a 14-point-purple-comic-sans-in-blinking-text blogpost.