I've been using it quite a while - the following are the benefits I enjoy.
1. Getting the vmail transribed and texted to me - while not 100% accurate, gives me a good idea as to what the call was about - important, long or short - if theres a number left to call me back - 99% of the time its accurate - and tells me which caller left the message.
2. Getting vmails saved permanently - no deletion after 30 days like with vmail on phone
3. getting calls fowarded to my gizmo(cant get this currently) if i miss the call on my cell - my laptop rings and i can pik up the call from my computer.
4. A number that reaches me only during certain hours on my cell (u can make restrictions), but without paying for another phone line.