As of March 11, 2012, these are the 1,067 of the 9,592 level 4 Wikipedia:Vital articles less than 9,000 bytes long, excluding {{disambiguation}} pages and articles rated B-Class or above in WikiProject talk page templates. Improving the stubs, start-, and C-class articles in this list could be the most time-effective (like cost-effective but for volunteers) allocation of effort for those who are uncertain what to work on next.
It took several hours to query the JSON page view statistics from http://stats.grok.se, so in the future, the articles' number of incoming "What links here" backlinks will be used as an alternate measure of popularity. Npmay (talk) 18:55, 15 March 2012 (UTC)