By Tim Schmoyer
"YouTube Annotations are an important tool for any online video producer on YouTube, but many people either don't know how to use them nor use them well. This is not a tutorial on how to create annotations on your videos — there are plenty of those around on YouTube already. This is a look at how to use annotations to effectively engage with your viewers, how to use annotations to get new subscribers, how to introduce viewers to your other videos, and promote interaction with your audience."
Source: How To Use YouTube Annotations To Increase Engagement on YouTube - The Reel Web Creator Tip #8 http://www.reelseo.com/how-to-use-youtube-annotations/#ixzz2BsVK9oXN