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I own a company for teams Ex  myteams.com . A team registers and they get a site at team1.myteams.com.   Content on each sub team site is mostly unique and I have several back links on each to the main site myteams.com. I also provide them with a unique URl  team1.com will show team1.myteams.com. So couple questions As far as SEO should i be pushing the  team1.com url or team1.myteams.com url? Is a link from team1.com or team1.myteams.com better for my site, their site or both How many back links should the sub sites have? Thanks