You should read this if you're considering starting a venture that relies on a single marketing channel for customer acquisition:

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When SEO Fails: Single Channel Dependency and the End of Tutorspree
Although we achieved a lot with Tutorspree, we failed to create a scalable business. I’ve been working through why. In doing so, I’m trying to avoid the sort of hugely broad pronouncements I often…

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This post was first made on the Richard Hearne Google+ profile.