the list is almost always going to have just one item on it, if
that, so it's not worth the trouble.
+
+Since 1.6 there is a 'job queue' in the jobs table, which is used
+to update link tables of transcluding pages after edits; this
+may be extended in the future to more general background tasks.
+
+Job queue items are fetched out of the queue and run either
+at a random rate during regular page views (by default) or by
+a batch process which can be run via maintenance/runJobs.php.