Calling this number (267-slydial) will let you go straight to someone's voicemail. Its a free service that can be found here (
http://www.slydial.com/). The only problem is that you have to listen to some adds first which IMO is worth it. I can think of a few times when I was on the phone wishing the person on the other end wouldn't answer so I could just leave a voicemail. Check it out, its worth the add to your contacts just in case you need it.