[bcc polymer-announce]
To date the best way to get questions answered by Polymer experts was to send an e-mail to polymer-dev, our general purpose mailing list. That works, but the questions and answers get mixed in with lots of other e-mails on the list, making them hard to find later--especially for new members of the community.
That's why we now
recommend that you ask general questions on stackoverflow.com, tagged with "polymer" (or, if your question is not specific to Polymer, "web components"). The Polymer team will keep an eye out for new questions there and make sure you get an answer.
Of course, polymer-dev is still a great place to talk about all things Polymer.
--Alex