Sound off! How often do you upgrade your phone?

Like clockwork, Apple's latest iPhone is almost here. Of course Apple isn't the only company that releases new phones on a regular schedule -- in fact, it seems like some unveil new models every month. With the latest and greatest always on the horizon, it's easy for us to feel pretty claustrophobic locked into a two-year contract and the threat of hefty early-termination fees hanging over our heads. How do you plan your upgrade cycles to get around these obstacles? Share your story in the Engadget forums.