Twitter now uses such things called tailored suggestions. If you didn’t already know tailored suggestions are suggestion of other accounts which link to yours based on content and the things which you like and re-tweet and also the people who you choose to follow. It also takes other social media sites which you have integrated widgets and twitter buttons for. This is twitters way of being able to connect you to the things which you actually care about.
Twitter also tries to help you become notice through its use of the re-tweet button. For example if someone with thousands of followers re-tweets your tweet all their followers will see the re-tweet and either follow you or re-tweet which gets to even larger numbers of people.
Recently due to the latest mobile updates for the twitter app it has come to light that they have changed the favorite button (star) into a thumbs up like button. They done this as a strategy to try and make twitter more engaging for its audience, however results showed that this was not as successful as they believed it would be.