I've submitted a few poll ideas...none of them made it to an actual poll, however.  The last one was about the Psystar situation.  I thought that would've been a good topic for a poll, since it seemed as if our forum members were torn between the issues.  Now that I think back to my actual suggestion, it probably could've been better, but the topic itself seems to have been a perfect opportunity for a poll.
I'm not upset that my particular suggestion wasn't used, but it is a bit discouraging to see so many missed polling opportunities.  I'm sure other members have had similar feelings.
In response to the original idea of a weekly post, I think that's a great idea.  A new poll everyday would be alright, but it's almost too small a window of time to get a full consensus.