Viable White Hat Link Building Strategies

After reading the recent thread which discusses SEOLinkVine, which I thought was pretty intereting btw, I was left sat wondering if there are actually any genuine white hat link building strategies that are endorsed by people.

I hear people rubbish article marketing, the same goes for blog commenting and obtaining links from forums.

Threads about buying links tend to always come with warnings plastered all over them and whilst I'm sure people don't think this is white hat there's still more of us doing it than aren't doing it imo.

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