So here at Sopo, we don't have a phone in the shop. If we did, we would spend most of our open shop hours responding to messages. So we have been using our personal cell phones. However, a friend hooked us up with an invite to a service called Grand Central (http://www.grandcentral.com/). This gives you a number and then you have it forward to whatever number. It has a lot of features and settings that I'm not going to blather on about.
So if anyone wants an invite, I'm more than happy to use them for other shops until I run out. The shops that I hook up can use their invites to hook up others and so on. All I need is your name and email.
That is a cool service, no wonder Google bought it. In Salt Lake we actually pay for a phone line and use distinctive ringing for our fax line.