Ideas to Attract Customers using Social Networks

Hey everyone!

In a few months, we will be opening a sports bar establishment. Any suggestions on using social networks such as Facebook, Twitter, etc... to attract customers?

We were thinking something like: "Follow us on Twitter to receive promotion codes for discounts!" or sending tweets like:"Join us for tonight's game at 8 PM. Free drink with your pizza!"

We'd like to hear your ideas.

Poster :