It's not all that complicated.

"Be honest, interesting and unselfish," says Laura Fitton, ), who runs , which advices businesses on how to utilize Twitter.

That means not just tweeting links to your own company or website. It also means when you tweet other people's work or news, you shouldn't make it look like a chore. Add some feeling or commentary, or people will see through you.

"You can't just pretend the unselfish part and phone it in," she says. "You either are or you aren't."

One way to show how unselfish you are: contribute to topics of interest to you by replying to tweets on that subject. But just replying isn't necessarily enough to convey that you care. Don't be afraid to stir debate and define your views.