I always know it's a telemarketer when the conversation starts off with them asking me how I am today. Anyone who knows me wouldn't give a crap as to how I am!
Since adding my four numbers to the Do Not Call List, the telemarketing has gone way down, but non-profits, political and charity organizations can still call. For the six months to a year before the NH primary, I'll get 4-5 calls a day from political organizations/pollsters.
With the in-home business, I get 6-10 calls a week for charity contributions. I understand that they're all good causes, but I feel bad having to turn 95% of them away. We just get too many calls and can't give to everyone. I ususally pick one or two major organizations a year and offer photography or video production services for one of their events or promotions and then make contributions to some smaller, local groups.
I have no tolerance for sales calls on my business lines, though. I'm usually working 12-18 hour days and get really, really, (did I mention "really"?) annoyed when someone is interupting my working on a tight deadline to tell me how great their prices are on disc media or how leasing that 100,000 page-a-month copier will actually save my business more than the $800/month it will cost me. I get really rude to those people that interrupt my work when I'm "in a Groove"!
Peter, don't we have to renew our number every 5 years or so, or we get dropped off the list? I think I remember that is the case. Now if I could just remember when I signed up for the list. 
