I'm starting a blog for a small niche. I already have 2 sites that cater to slightly broader audiences than what my blog would be about. I can also write authoritatively on the subject, so it should be picked up by a few other sites. Site #1 is 6 years old, Site #2 is 6 months old. Quite naturally, Site #1 ranks better in the SEs .. generally on Page 1 for most keywords. I feel that Site #2 actually has more potential than site #1. My blog would target a larger portion of the audience for Site #1, than it would for Site #2. So should my blog be on Site #1, Site #2 or on it's own (even more narrowly targeted) Site #3?