Need another phone number? Most people would answer no but recently I had to say yes to that question. I needed a number that could reach me wherever I was but that I could occasionally forward to someone else to handle inbound technical calls. I didn't want to use my cell number or my business line because I wanted to keep those calls coming to me or going to voice mail. I needed a virtual phone number. In looking around a bit I was surprised to find so many options. Here's a short list (in no particular order) of the ones I kept past the initial Google search.
GrassHopper.com
Tossabledigits.com
axvoice.com
vnumber.com
Google Voice
A friend of mine had Google voice so I asked him for an invite so I could try it out. That's the end of the story. Google Voice fit my need perfectly. In fact, it's totally awesome and currently free unlike the other services listed above.