I just read about Slydial on Engadget and I can already see quite a few uses for this. It essentially lets you dial directly to somebody’s voicemail box that way there is no chance of them picking up the phone.
The best part is that it is free as long as you are willing to listen to a short advertisement. If you plan on doing this often you can sign up for a subscription plan for $0.15 a call. There is no need to register to use the service.
Check it out at www.slydial.com or just follow the instructions above.