The front page of math.stackexchange, for unregistered users, shows the most widely viewed questions rather than the latest questions. Can the default front page format for unregistered users be changed? For a site to convey the dynamic ever-changing types of questions it gets, I think it would be better to let a new user see the latest questions being asked as the front page. The most widely viewed questions are somewhat stable (e.g., lately a "Sum of Some" and "Math is Tautology" questions are what an unregistered user sees on the front page at first) and this doesn't really put the best face on what math.stackexchange is about. A widely viewed question can be a somewhat low-quality question. Of course a new question can be low-quality too, but the new questions are often changing so there's a good chance that a front page of the latest questions will show better questions than one that has the most widely viewed questions.
Note: If you can't duplicate what I am describing as the front page, make sure to log out of math.stackexchange and then look at the site. My browser is set to clear cookies any time I log out, so I always see math.stackexchange at first as an unregistered user. If you don't clear cookies you may always be logged in to this site and thus not see what I am describing as the unregistered user's front page.