I own a nexus 7 also and I'm finding the thing more and more annoying to use generally... Do they actually want people to buy these things??? Nothing works properly.  The app store is practically alien compared to the phone app store and most apps don't even work on this white elephant.   Anyway the reason for this reply is to ask any of you guys above a question..
Is it possible to actually start a topic on this nexus app, or is it only good to read and reply to others ?  I'm not finding a way to start a topic.   

I would appreciate a reply.  Thanks.