Twitter has become mostly useless, over run with bots and fake memes, as illustrated here:

Continuing its battle against the “tweetdeckers,” Twitter suspended on Friday several popular accounts known for stealing tweets or mass-retweeting tweets into manufactured virality.

Source: Twitter Just Suspended A Ton Of Accounts Known For Stealing Tweets
The system relied on a secret group of Twitter accounts with large followings to generate fake trends.

Teens and twentysomethings with large Twitter followings are making thousands each month by selling retweets, multiple users who engage in the practice told BuzzFeed News.
The practice is known as “tweetdecking,” so named because those involved form secret Tweetdeck groups, which they call “decks.” Scoring an invite to join a deck usually requires a follower count in the tens of thousands.
Within these decks, a highly organized system of mass-retweeting exists in order to launch deck members’ tweets — and paying customers’ tweets — into meticulously manufactured virality.