[Part of our "things" series]
1. Allows people to develop and market their service - Twitter keeps users coming back by allowing developers to innovate tools which make their product more appealing. This is called the twitter ecosystem and their are over one million registered applications.
2. Take Money - Twitter has been very good at taking money from investors for a quite a while, but those investors are going to want to see a return and now they are rolling out promoted tweets in the main twitter timeline.
3. Celebrity endorsement - Without twitter having to pay them and state their interest makes their product very appealing to other users. It also allowed us to get in contact with people that may be very difficult to ever get in touch with.
Let us know what you think...