3/28/2014  received call from 218 384 4516 - MN Health Systems - a woman's voice asking for my husband.  Husband not available so, "Would you answer a survey, only take about 60 seconds."  Basically, a survey on how do you feel about air pollution.  These were rapid fire questions, information was gathered, by merely a voice on the other end of a telephone, no identification of who or why these questions were being asked.  I am shocked by the fact that I answered all the questions.  She ended the call by saying they were going to call back and I would get a "prize" for answering the survey.  
WTF?  a prize? given for having answered some questions?  who the hel...
Who is MN Health Systems?  What do they do?  

I called the number back, after considering, wondering on it.  
I talked to a rep, a man's voice on the other end of the line.
Dave asked for my name, I gave it, I asked for his, he hesitated and said only, Dave.
I suggested that wasn't fair as I had honestly given him my name.  He finally said Ripley, dave ripley.  Thank you.
Dave didn't want to name any other names however, like who exactly had just called me, or why, and what exactly MN Heath Systems does, but he did put me on their "no call list" ... and of course I didn't get my prize.  

Google search says they're in Carlton, MN.  They sell air filter systems.  Now it all makes sense.
Pay attention people.
The only prize that could possible be of value to me, is for folks to be up front and honest about what they're selling.
This company, the one that this phone # is associated with, is not.