Ok thanks.
@rainwarrior: For some stuff (graphics-related bug or to show a homebrew project for example) I feel a video is better than a super-long post. I feel you risk loosing people's attention if you post a long 2-page post, but a quick 2-minute video can deliver the same information and keep people's focused a bit better. But your thumbnail idea is really good. I could even add the YouTube play logo in the middle and make it look like and embed!
@koitsu: "for what should be obvious reasons". I feel YouTube content is usually SFW and family-friendly, no? Maybe I don't hang out in the dark corners of YouTube. Am I missing something else? Maybe we don't want the forum to turn into a meme-fest, but animated gifs would have done that by now if it was an issue!
-Mat