Free Web 2.0 services you can use - GrandCentral.com
GrandCentral.com started as a typical stealth startup in the Bay Area - somewhere down the line they got bought by Google - a very low profile purchase for Google surprisingly. What GrandCentral provides you is something very basic - an ability to keep one permanent phone number - no matter where in the USA you move. The number literally follows you - you can set preferences for which of your numbers you can be reached at during various time slots of the day.
The service works great and is free for now - how Google plans to monetize it is a mystery at present. It may be a good idea to join now - while it’s till in Beta.
If you need a beta invite, write to me at kalrasanjay [at] gmail [dot] com.