As of today, YTtalk has been the most effective platform for me. FOUR subscribers and my views doubled from 30 to 60! ...all from YTtalk... oh yeah, I'm breaking records!
In all seriousness, I just read all 23 pages of this thread and was able to pick up some information on looking for Facebook/Twitter groups, direct messaging, Crowdfire and youtube specific subreddits like, /r/youtubers and /r/newtubers.
So far my Twitter and Facebook pages are lonely places to be... no likes, no messages, no visitors. Just me and my postings. Like a box full of toys and no one to play with... intent on searching out groups and messaging people as waiting for other to message me has thus far been unproductive.
I'm on youtubersPLUS (a google+ community touted as the largest youtube group on the internet) but for five million members, the site feels dead. Very few new videos posted and no engagement on the videos I've posted. Either my blonde is kicking in and I don't know how to use the group, or I need to find a more productive one. Is there something with google+ groups I'm missing? A cheat code perhaps!?
And reddit.... ahh reddit, lol.... my /r/casualiama went over like a lead wedding ring, no engagement. Hopefully looking into the youtube subreddits that I didn't even know existed will yield more positive results. A bit hypocritical of a site, lots of "no self-promotion" 10 to 1 posting guidelines and then Matt Damon or someone shows up plugging their new movie and ... wait... what happened to no self-promotion?! Navigating the fake-meta to find a niche that's cool is my current game plan.
I poke fun of my humble subscriber and view count, but only because I appreciate them for being cool enough to watch my stuff, comment and subscribe to my comedy channel because they like it... that means a lot to me. I'll have to check back here as my subscribers grow and post updates on what platforms and methods worked the best for me...