Twitter has made great efforts to make their service more useful for businesses. One of their more successful developments is called Promoted Tweets. Promoted Tweets are like normal Tweets but they have superpowers.
Unlike a regular Tweet that goes to a user’s followers, Promoted Tweets are sent to the Twitter streams that match a targeted profile. They are mostly used by brands and companies to get more eyeballs on their products and services – See more at: http://www.patientsites.com/blog/How-Promoted-Tweets-Can-Improve-Physical-Therapy-Marketing~556.html#sthash.RbiBsCao.dpuf