This poll system has become our bread and butter for our site. This is a very flexible poll. Use it to rank entries, use it as a listing, use it for feedback and so much more. This is a great component to have users interact with your site beyond a simple poll.
Pros: Flexibility, spam-protection, support, unique features, simplicity in use.
Cons: Nothing significant. When upgrading, I have to re-upload the css file to keep the poll layout the same as before.
A most excellent extension.