Twitter has been around since 2006 but most people did not get on it. I have a friend who has been on it since about 3 months after it started, then it was just tech nerds. Now major brands and businesses are on it each and everyday promoting their products or services. Below you will see that the topics have been broken down into an easy to see checklist. I really like that food trucks have embraced twitter to promote where they will be. One thing I will say that I see a lot of people starting to participate in is industry chats.
Do not be afraid to build your brand on twitter, so many millions of people are there you can reach out to them and you can also get quick feedback.