The answer is yes (sort of). There is one specific thing we are working on that will have a polling component, but I can't say any more about that one yet.
For polls on outfits in general, Angie and I have talked about this often and just haven't nailed down the specifics. We've always been a little concerned about the (potentially negative) dynamics of quantified feedback.
Polling could mean a simple "yay or nay" vote, or it could be a rating system like Queen Mum describes. I would love to hear any and all opinions on what you'd prefer.
Michelle, yes the core of YLF is based on Wordpress and there are quite a few plugins for Wordpress that do polling, but with this sort of thing I typically end up doing custom code to make the user experience do exactly what we think it should do.