Twitters if you like or dislike a video
For use with Tampermonkey or Greasemonkey
When ready to use, the like and dislike button become underlined with a green border.
Open the file youtube_tweet_like.js, click on raw view and copy the complete code into your clipboard.
Then click the monkey icon in your browser and select New user script. Paste the whole content of the clipboard in and hit the save button. You are done and can close the tab.
Visit any Youtube Video. Wait until you see a green border below the LIKE and DISLIKE buttons.
Hit the LIKE or DISLIKE button. A new tab will open with the text in it. You may change it and tweet it out.