I have Vonage and love it! VOIP is the way to go and there are some large companies that are heading that way. My brother works for a huge corporation based out of Switzerland and they are switching 50,000 phones to VOIP lines this Summer. Soon you will see the phone companies offering it. It is the only way they can survive in the long run.
SBC is rolling out their VOIP
http://www.newsfactor.com/story.xhtm...story_id=28480