We decided that interactions would be most productive by having folks like myself and Vanessa and search quality engineers set up and participate in our Webmaster Help Google Group... answering a (most typically frequently-asked) question once and having it viewed and helpful for thousands or tens of thousands of Webmasters.
This is key to getting information on the public forum. It has to relate to as many people as possible. They are not going to answer, "why doesn't my site rank for monkeys?" as I'm sure they get that question a million times a day. On the other hand, other members of the forum likely will answer such a question, as posting of the URL in question is not discourage but actully almost required.