I like the idea of being able to access rec lists, but an additional solution might be the "digg effect", the way that digg.com's news submissions become popular: if someone likes a link, or finds it interesting, they just hit a single button and it gets "voted up" by that person; digg also has the system in which the top news stories are put in an easily accessible "top-ten" list. This might be used cross-fandoms as a way to find the "biggest" stories that are appearing in different fandoms, without requiring a person to go through a lengthy process of writing a review/rec list, (which I prefer to exist as a feature).