A great business idea is sometimes called a money spinner. Let Google Voice spin money — and save money — for you with these five top money-saving features:

  1. Free U.S. and reduced-price international calls, charged to your account, from any landline or cell phone.

  2. Free conference calling (incoming calls only).

  3. Free call recording and store online (incoming calls only).

  4. Transfer a call to and from mobile (incoming calls only).

  5. GOOG-411 - free directory assistance.