I am very impressed with Xmarks. I'm not sure why I never found out about it until now. Your similarity results are definitely "good enough" in the high satur

I am very impressed with Xmarks. I'm not sure why I never found out about it until now. Your similarity results are definitely "good enough" in the high saturated categories. The "topics" aspect is pretty awesome. Might I ask: How did you populate the categories? Do you back reference domains with a directory?