What's a fanlisting?
A fanlisting (FL) is a non-profit, non-commercial online listing of all fans of a certain subject, mostly for entertainment purposes. In this case, this site is a Fanlisting for the literary, film or television genre, thriller. More info »
Why bother with a fanlisting? For website owners, a fanlisting serves the same function as any other listing -- more exposure for your site, since it gives you more backlinks, possibly improving your pagerank. For non-website owners, it's a fun way to immortalize your interests online. :) In other words, it's an innovative way to let everyone know that you like a particular subject or person; it's like a proclamation badge of your interests.