Cell phones are central to how we communicate. Qwest's latest numbers show they just lost almost 8% of their installed phone lines. More and more people are deciding to go wireless only. Verizon's initiative for unlimited wireless plans starting at $99/month has really helped the push. Their deal was soon matched or one-upped by the other major wireless carriers. Numbers now show that Verizon's wireless subscribers recently jumped from 4% to 15% on the strength of their $99 plan.

Metro PCS -- one of the smaller wireless players -- has responded with its own Family Unlimited deal. They're offering 4 wireless phone lines for $100/month. No credit check, no contracts. This includes unlimited local and long-distance calling, voice mail and text messaging. You don't even get text messaging with the comparable AT&T and Verizon plans. Metro's deal can also be prorated: A family of 2 would pay $70 and a family of 3 would pay $90.

What's the catch? Well, Metro only works in select markets, so this may not be a deal for people who travel around the country frequently. But it's a no-brainer if you're a homebody. It's also a great way to completely dump your monopoly phone company landline.

Clark predicts that wireless is just going to get cheaper for minutes in the future. The iPhone and Google's Android are helping the push for these "all-you-can eat" minute plans.