What is the new back linking?

In order not to make Google mad, what is the new back linking? What are the new strategies for back linking guaranteed not to ruffle Google's feathers? I know that you can make social media pages and link out to your website content from there. I don't know much else, though. It's a lot different now, I assume. I wouldn't want to get in trouble for back linking in a way that displeases Google. What methods are there for getting great back links?

Diversity is the key. Building backlinks doesn't change at all in terms of techniques.

Have you vary the anchor texts? Due the Penguin, don't focus one keyword in backlinking.