I fear that omnibus Q&A's (is there an accepted term for these?) like What are the most common pitfalls awaiting new users? and Where can I find examples of good Mathematica programming practice? can grow too long to be genuinely useful, and they may have done so already.
When one is met with a wall of links, even a well organize one, there is undeniable content dilution. Not all posts and not all elements of those posts are of equal importance. In the case of pitfalls posts are at least voted up or down which provides a relative placement for those with that sort option selected, but these unpopular posts still take room in the index. In the case of examples the many links in each post are not ranked by votes.
I propose a culling process by which unpopular content is removed from these pages.
For pitfalls this could be as simple as: if the post has not accrued p votes in d days (values to be determined) the post will be removed.
For examples this would be much harder. However I think here it may be that much more important so that high quality references on popular topics are not lost among those of lower merit. If others agree at least that this is a problem then we should consider if there is a practical approach to reviewing, ranking, and perhaps ultimately culling some of these many links.