Many Youtube accounts are now eligible to put links in their videos to their “Associated website”, but you can only associate one website to your Youtube account. In this video I show you the steps to add clickable buttons in your Youtube videos that link to any, and as many websites as you want. This can be good for linking to your Facebook page, Google Plus Profile, or other social media pages, and pretty much any website you choose.
Please be sure that you read through the rules about Associated Website Annotations which has this note at the bottom (before you go crazy abusing the feature):
How to Put Clickable Buttons to Any Website in Your Youtube Videos : Google Plus, Facebook, and more! by Rand Wilson