Do you text message? If you do, and you aren't on a text messaging plan with your carrier (or have free messaging as part of your rate plan), you are likely wasting money. This is the case even if you are sending or receiving just one text message a day. If you are sending & receiving just 4 messages a day, you could be overpaying to the tune of $200 per year.
MyRatePlan has just launched a new text plan calculator. Try it out... it only takes about 15 seconds and could save you a lot of money.