Glad I got to post this because I've been looking at some of the responses from recent months and I guess we sort of sometimes forget that we should explain things to newer posters.
In 2008, Spartz posted this for the first time, saying she wanted to see how her taste changed over the course of the year. And it was just sort of kept up with in the years that followed.
So, in reply to this post, you are supposed to post your top 10 favorite names of right now. Your personal favorites, not the top rated names on your PNL or anything else. And then you can find your post months/years on and see how your taste has changed.
(also, it was originally top 5. Do whatever you prefer, or whatever gives your list consistency. But someone actually got sassy last month when Spartz [the starter of the whole thing, hello] posted it as "Top 5" and I just think you should know your history ;p)