I'm a bit of a connoisseur of Google criticism.
Mobile is important, and coming faster than most people in this room realize.
Make your links from blog comments genuine.
Everybody thinks their website is above average.
The objective is not to "make your links appear natural"; the objective is that your links are natural.
We want people doing white hat search engine optimization (or even no search engine optimization at all) to be free to focus on creating amazing, compelling web sites. As always, we’ll keep our ears open for feedback on ways to iterate and improve our ranking algorithms toward that goal.