There's a whitelist and a blacklist on their website, so you can add phone numbers that you want to go through and ones you want to block, respectively.

I know... You're thinking "Who has a land line these days?" But we do and that's where we get all the robo calls. I rarely get spam calls on my cell.

There's already a free solution for land lines: nomorobo.com. Been using it for about 6 months. Works great!!!

was on Wired blogs Nov 2nd...