This extension will block certain annoying users from appearing in the Activity column in TweetDeck.Twitter power users (like you and me, right?) often use TweetDeck and follow a good bunch of people. While we're interested in people's tweets, they may be filling the Activity column with useless content such as nonsense favs (nowadays likes/hearts) or massive follows.
Without this extension, you'd need to either unfollow the person who's executing the actions (follows/favs) or block/mute the receiver of these actions one by one. Since that's way too much work, I made this free extension so you can mute these annoying individuals' activity while still being able to read their tweets.
INSTRUCTIONS:
As soon as you install it, open TweetDeck and you'll find a new icon located in the address bar. Click it and add the usernames that you want to mute from the Activity column.