On April 24, 2012 many started to see that Google has started to penalize companies that are buying links for the purpose of passing off the rank. The Google Update was called Penguin. Since then, there have been several different Penguin/Panda updates rolled out by Google. SEM has, however, nothing to do with link buying and focuses on organic SEO and PPC management. As of October 20, 2014 Google has released three official revisions of their Penguin Update.
Thanks for the comment, I would not say it is impossible to create high quality backlinks from scratch without content, you just need to do a review on competitor backlinks and see if their are any easy targets. We have had some good luck in the education space acquiring links on the same pages as competitor from PR5+ edu sites. It all revolves around the outreach strategy in which you put in place.
Google is moving into more and more aggressively commercial spaces, like jobs, flights, products, all of these kinds of searches where previously there was opportunity and now there's a lot less. If you're Expedia or you're Travelocity or you're Hotels.com or you're Cheapflights and you see what's going on with flight and hotel searches in particular, Google is essentially saying, "No, no, no. Don't worry about clicking anything else. We've got the answers for you right here."
Google is a king. What best Google has done, kept all the bloggers life in a big web. Try to become as independent/different as you can, which Google might not have heard. It can be either name, brand, activity, etc...People focus on that things which they have never heard. It's unique way to come up in SERP's. We are used to EverydayHealth, EverydayLife, gets bored. Make sure people have reasons to return to YOUR site as often as possible.
People are more receptive to hearing these marketing messages because they are more natural and organic. They’re not paid for and stuffed in their faces through interruption marketing. An indelible experience has intrinsic emotional and psychological value, as people enjoy it. They then feel emotionally compelled to share their experience with others that they have a close relationship with as part of relating, so that they can share in the emotional experience too. This is done through conversation, phone, text, email, Facebook shares, Tweets, and the like.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.