Google's new phone service, GrandCentral, introduces several ways
to organize your phone(s) from the web. Introductory-level services
are free. The main features: One phone number that rings all of your phones; and one voicemail box for all of your phones. Other account features include caller screening, call recording and blocking, voicemail records and personalization, and more.
Note that the free service is limited to 100 minutes per month.