This is an interesting way to keep your phone costs down: use Skype. Skype is an internet based phone service that lets you make free calls from one PC to another. Sounds great!
But, as with everything, you have to be cautious. BusinessWeek is reporting that Skype may make your system more vulnerable to attack by hackers. Apparently, Skype opens up a hole in your computer that may allow hackers in. Some IT folks are concerned, and some are not.
If you are a small business, saving money is important. Skype may provide that opportunity to you, but you should check with an IT expert on the security risks first.