Opera staff are currently answering questions and comments at Reddit. You can basically post questions or comments, and someone from Opera might respond (though the number of comments is growing quickly!).
We have also paid for some banner ads and general advertising on the site (example to the right). I think it's interesting to be able to interact directly with not only Opera users, but also other people who may not be using Opera, but may still have useful feedback or interesting questions.
Anyway, if you want to participate, just click the fancy ad to the right, or the link in the first sentence.