I know you know that best nodes is also sliced on a month and a year.
There's been some discussion in the CB lately about doing things like letting monks over a certain level keep their links unaltered otherwise they might garner a ref="nofollow". I think this would also be a good idea to apply to nodes based on rep (and corresponding meta tags in single-node views). Even if it weren't being used at all, meaningful data is worth collecting. It's true anonymous monk posts don't often land on the best of page. I think they would more often if there were less reticence to "waste" votes on them.
We have talked about not rendering external links for nodes written by low-level monks when being viewed by low-level monks, due to the increasing problem of link spam. Adding the ability for up-votes to cause such links to be rendered is a valuable improvement to that idea. Thanks.