Assuming you've thoroughly investigated the legalities of it, I say it's worth a shot. Personally, I doubt it's effectiveness for a few reasons (1) the declining use of landlines in favor of cell phones (2) the tendency people have toward hanging up on telemarketers and (3) the relative low yield of telemarketing efforts even when selling a product that people actually want.
I wouldn't fault a man for trying it out, though. Who knows, maybe my thoughts on this are not accurate for your area. At least it gets the message out there.
I had a church advertising on my station, and they complained that their advertisements were not resulting in new visitors. I replied by saying that the Gospel is something everyone needs, but few people want, so the message (especially in an impersonal advertising medium) will go largely rejected.
Telemarketing is more personal, but once they figure out that you are not a friend, family, or the office, I would think they are just trying to get off the phone.
What are your plans?
