Quote Originally Posted by VOIPoTim View Post
We see a good amount of calls blocked by it so it's working in general. Unfortunately no method of blocking is ever going to be 100% and it's always going to be somewhat of a cat and mouse game with telemarkters getting more creative to find ways around it.

It's just a tool to use to help reduce and block them, but no tool will never get 100%.
The biggest issue I've had (other than the internal blocking mechanism seems to work better after I filter the call) is that Nomorobo seems to block people using Skype. I had to remove it from one of my lines because I have a regular Skype caller.