This is the inverse of MostReferencedPages.
Really, it's trivial to create a meaningless page with a lot of links outwards. Just copy and paste AllPages a few dozen times. It's harder to get people to link to your page. Also, studies have shown that people really hate pages with high fan-out because they feel the need to hit every link, especially if there isn't much differentiating the value of one link over another.
It's also possible that high fan-out pages will only be glorified bookmark pages, or link lists. Not too important, really. -- SunirShah
[August 19, 2000]
I have implemented this for MeatballWiki: