New Poll: What is Yelp? Why some businesses just don't like it and the others love it.

Have you every wanted to write  a review of a business?  There's a website out there that allows you do just that.  It's called Yelp.  Go ahead and Google Yelp and try it out if you like.  In the mean time, I put up a simple poll to ask the question of whether you have ever used Yelp to review a business.  

I just listened to a radio program speaking to the merits and distractions caused by sites like Yelp.  And I've been thinking about building a page on their site for my business and I'm not sure about it.  Take the poll.  What do you think?