Block ads on your You Tube videos

A teacher asked me today about blocking some ads on the You Tube videos that she shows.  I have been using a Cleaner Internet and it works wonderfully.  I posted this tid in a newsletter last year and thought I should mention it since it has worked so well for me I almost forgot about those annoying ads.  Although I have never used it, Adblock Plus has been recommended to me in the past.  It is an Open Source browser extension and works with Firefox and Chrome.