I honestly think it's very annoying. He only ever posts when he's creating a thread to promote his youtube channel..
Im personally fine with posting you tube videos (I will not watch them), what I am not fine with however is having no attempt at all to portray in your post what the link is about, same issue I have with people leaving links to websites with no background on what the article or whatever is about.
I personally do not care for the giveaway though. please don't post a video about a giveaway to your subscribers on a forum not related to your video, (again did not watch it) If you do I think it is only proper to give people in the community you are posting the video that do not want to subscribe to your channel the ability to enter also (drop an e-mail, phone number, or address to also get in on the prize pool), or just not post it because it is just an attempt to boost your subs
