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Hi Kyle, Thanks for your question. "I really can't be arsed giving every single site it's own full SEO treatment :)" Being honest, without putting major effort into each site, I doubt you'll be able to dominate an entire SERP for even a medium competition keyword for a decent length of time. As has been mentioned below, there have been efforts by Google to tone down results from the same entity (admittedly, to varying success) but it feels like for the work that is involved, you may as well spend the time building a single site and marketing that one really, really well so that it stands the test of time. I'm not really sure what you mean by link blocking to be honest, but if you want to clarify, I'd be happy to follow up. Cheers. Paddy