Hi there, I have build around 50 sites about 6 different subjects, and I use those sites to point to my "main" websites (the ones doing money). I guess this is blackhat right ? So would it be safe to put some adsense (from the same adsense account) on all my sites, or it would indicate that those sites belong to the same owner and thus delete the effect of my links between my sites ? In other terms: does the adsense team share info with the seo team at google ? Same question about Google analytic by the way.