Ad Skipper is gives you less interrupted online streaming and skip or removes ad on behalf of you. It does not block an ad.
New Update: Fix YouTube auto skip ad issue
YouTube Ad Skipper is an add-on for auto skips video ads and close all other ads after website provides a skip ad button. It does not block an ad. So you can now sit on your sofa and watch movie without any interruption.
Currently Supported Websites:
1. YouTube