I agree with the above comment -- I wouldn't use it to conduct a traditional poll on a web site.
But the 'Complexity' might be more like 'Entertainment' if you turn into a Facebook app and/or a Hunch-like destination site.
I think it is obviously a GAME which doesn't mean it can't have utility, too.
Also,
1) Nice graphic design. Nice UI design.
2) Way too much copy.
3) A lot of the copy has a great playfulness to it but what's with bludgeoning polls? It feels like you're protesting too much and I bet PollDaddy isn't your competition, as much as social prediction market sites, etc.
I have a couple of ideas for you, to potentially make it more feasible / faster to implement.
Two problems:
1) A lot of these sites that you refer to are small and the chance of multiple users of a FF plugin going to that site might be unlikely.
2) Unless you have a lot of experience with FF plugins, it sounds like a lot of work for something you may just want to experiment with.
So,
1) Make it a destination site, with a simple bookmarklet for grabbing the text and adding questions, etc. It takes 2 minutes to make a bookmarklet that can grab text and will work with more browsers than FF.
2) This way, you also expose neat questions/ideas that are ripe for discussion, from a series of small sites that might otherwise go undiscovered.
I understand it's not quite the same, but for a small project, proof of concept, it's a day or two of coding instead of a huge commitment, and it works well even if you have a tiny number of users.