From my experience with Adsense I got disapproved after a visit from a URL to my blog. The URL was SPAM which is known as REFERRAL SPAM. See more about REFERRAL SPAM here.
Why Adsense account got disapproved of Referral SPAM ?
In the Google Adsense policies, It says that you should not pay someone to visit your blog/site. When you are placing the ad on your blog, Google tracks each visit to your blog. When they see a suspicious URL in the traffic sources they count it as a paid to click URL. Hence you will get disapproved.... [READ MORE]
Is embedding video from YouTube an Adsense violation ?
Many embed YouTube video in to their blogs. This is a adsense violation if the video has:
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- Copyright content
- Owner is not you
- Video is Copyrighted and no one is allowed to put it on a site
The reasons above may be a reason why your Adsense application was rejected. Please THINK BEFORE YOU ACT while writing each blog posts. You should make sure that the post you are about to write isn’t a copied content or doesn’t contain a copyrighted material such as images, videos etc……
These rules not only applicable to YouTube videos but to all sites that offer video uploads and embedding such as DailyMotion, Vimeo etc….