GrandCentral is a real gem among the growing number of companies that have been acquired by Google.

GrandCentral is an innovative service that lets users integrate all of their existing phone numbers and voice mailboxes into one account, which can be accessed from the web. There are so many features with GrandCentral, you won't believe it. All those features can be broken into three main groups: controlling your phones through the web, personalizing (greetings, ringshare, etc) and exploring new ways to use your phone. A WebCall Button, a function that allows people call you from a web page without showing your number is one of the examples of what you can do with your phone. Hard to believe, but GrandCentral allows you even to switch phones in the middle of a call. Amazing!

At the moment, GrandCentral is in the process of moving their technology to the Google's network. This means that a limited number of invitations will be available to register for a GrandCentral beta account. So, if you have a U.S. telephone number it's a good point to sign up for an invitation. As Google says, current GrandCentral customers will continue to have uninterrupted access to the service.