block ugly videos, chanels, users, anything from searches
ytBlockr extends Youtube's UI to allow blocking users, channels, titles or single videos. It also allows blocking obvious troll videos e.g. videos that only last 1 or 2 seconds (configurable).
If you experience issues please leave a comment and I will do my best to fix it.
Sadly not all videos can be blocked. Since this extension uses Youtube's built in features it is very reliable but fails with content that is updated manually (e.g. load more on scroll to bottom ) due to missing events.