The best way to get inbound links is by writing quality content. When you publish good posts and articles with a link back to your site, people will comment on them (and link their own sites). If you write thoughtful advice or helpful tutorials, people who read it are much more likely to want follow up on it by coming from your site. That's why outreach through R&D and publishing valuable content pays off so well--it's like the chicken and egg problem solved! Quality research can lead to new insights, which leads to quality advice that leads back around for even more rankings and still more results.