Read the fine print:

Of course you won't sign away your soul when you sign up for a broadband service. However, if you're not careful you could be signing away savings or extra features. So before you take a pen in hand or get ready to key in your credit information, make sure you're totally clear about what you're getting. Do you know all the features your broadband service will offer you? Do you know what other service features you need to pay for? Also, if there is a special make sure you understand what happens after that so-called savings period is over. Most broadband service providers will offer their broadband at a discounted rate, but then go back to their full monthly fee after a certain time period. They also might drop some of the features since they were only offered in the trial package. So talk to your provider, ask questions, before you sign on the dotted line.