Extremely useful. It can block channels from the search results.

Great extension, very useful.

As of the time of 5/6/2024
This Addon seems to be working in filtering spam comments on youtube. Blocktube seems to no longer have this function and the last update was two months ago and Ublock origin hits the entire comments section instead of a specific comment. This addon has significantly improved my browsing experience and I would recommend this to anyone I talk to.