Yes. Several things are going on (1) we are going to eventually collapse the groups down to a few selective ones that serve a specific function vs. being product or technology specific. Tagging is a better way to go than the groups, it's more flexible and easier to link in content from other places (2) there will be a list of the core groups on the main page and (3) I've been discussing with Evgeny filtering out the feedback from the home page since it's useful information, but distracting for most people.

The overwhelming consensus a few weeks back was to have the home page ordered by the latest posts, then posts with the latest comments, DESC. The filters are just doing filtering, not altering the sorting. The "Highest Rated" filter is those postings that are at least 4/5 stars. We might revisit this to make the filtering options sort differently.

The next build has a new filter for "Unanswered" which shows all questions that haven't been answered. Each posting in the list will show the rating plus the number of comments and if it's a question, how many answers have been provided.

The "Newest" button is supposed to be doing MAX(PostDate, LastCommentDate) DESC but doesn't appear to work properly on that message for some reason, but does for others. We will investigate. The UI for post listings will be modified in this upcoming release (next day or two) and it will look and act more like StackOverflow with Articles vs. Questions a new filter just to show unanswered questions.