I strongly disagree.

I really don't understand how people can try to get you to sign a petition or answer a phone survey without being able to explain the purpose of the petition/survey. I just got a call from someone wanting me to answer some environmental questions, and I spent a good 10 minutes trying to understand the purpose of the survey, who it was for, what greater good the responses would serve. She couldn't answer, so I hung up.

Occasionally I get phone calls asking me to give my opinion on certain songs played on the radio. I'm happy to sit through those - especially when it means I can say "don't ever play that again" about Creed or Nickelback songs. Or "we need K-GAY more than once a year."