Apparently the Featured Articles list comes from http://wiki.lesswrong.com/wiki/Template:Lesswrong:FeaturedArticles , which is maintained by Costanza. Looks like she added it during a routine weekly update, I guess to get some variety to the list? Anyway, I deleted it for now. (You may need to hit "Force reload from the wiki" to see the updated front page.)

And before anyone criticizes Costanza too harshly, I'd like to say that regularly updating the list of featured articles each week is a great thing for someone to do, and I'd like to thank Costanza for being the one to do it. :-)