That's what we have sigs for. To put our Youtube channels in. To be honest you would have a better chance of someone clicking the channel on your sig than spamming "DUDE CHECK OUT MY CHANNEL" at least from my experience 90% of the people that do this don't even have channels worth watching (No offense). There are other ways to network (With playing a new video game the easiest and fastest way to gain attention) without having to spam every other thread.
Just something that was on my mind.
I Hate When People Spam "Check Out My Channel"
Blog entry posted by TheGameTagerZ, Aug 24, 2012.