As my question says, one obvious way is to upload content of your niche. But then how to make it popular inside and outside of youtube? I will appreciate your efforts.
Use some bots to generate views and buy some services from people for rating, commenting. Make sure your niche is good and unique, then after some days it will generate you good traffic to your site. Just watermark the video with your website link. i have said a simple way. I am not sure it will work or not
what he said above will work. the key is to just promote your youtube link all over the internet so people view the video
Tag your video using similar tags as an extremely popular video in your niche. Use words in your video description that are similar to popular videos. This might help in getting your video appear in the related videos section of these popular videos and you may get some traffic from them.