Ok so over the last month or so i have found a way of getting comments rated in the top rated comments section (Naturally). - Never give a spammy looking answer ,Make sure its informative with a bit of fun in it to make people smile or something (LOL). Also include Keyboard symbols to make it stand out BOLDLY. - If your promoting a site then make sure its related to the video and it has good content , Images etc - If your using aff links on your site then cloak them. This has been good at getting me Clickbank sales for a product and its similar to buying links in people's descriptions except its free and quite easy to do depending on the post you make as sometimes i get 40 likes in one hour or something. The key is to get as many as possible likes so that people cant "Push" you out from the Top comments box. If you want to do it blackhat then get Hidemyasspro VPN , Buy a few hundred youtube accounts and do it manually. But my method is really set as when you post a comment people will start to like it without you adding likes from fake accounts Hope this helps !