It’s common sense.
I’ve heard a lot of complaining from SEOs who have sites that have plummeted over the past few months. Some shaking their fists and blaming Google, some a little more realistic. All complaining nonetheless. And the one thing they had in common as SEOs, is they relied on some type of SEO crutch. They have either disappeared, or they lost spots for their clients.
I didn’t lose any spots anywhere, despite experimenting with various tactics and strategies. And it’s not because I had some super serious spygames moves. It’s because I didn’t get too hyperfocused on specific things.
I just went out and got links, and got social mentions. I didn’t buy links from link networks or exchanged backlinks. I didn’t obsess over backlinks. I just got them. A lot of nofollows. Lots of branded links. Lots of domain links. Whatever.
So, to avoid getting wiped out in the next Google update, I suggest you stop trying to outsmart Google. Know where the line is, but more importantly, know where the line COULD be. And work within those guidelines but do so in an very aggressive manner, and eventually, you’ll have update proof rankings. And you’ll see sites rise instead of fall when the next algorythm update comes and wipes out all your competition.