These are 100% White-Hat backlinks naturally weaved into existing, topically relevant posts. From a performance point of view, because the content is aged over numerous months/years, I found that Googles algorithm tends to give greater strength to the outbound link. They can be even more effective than fresh guest posts.
How it works: I research and find existing blog posts that are already indexed by Google and I reach out to the blog owners to get your link placed within the content and often edit the text to make sure it blends well. I'll do my best to find topically related sites/posts, but I can't guarantee that every site will be closely related to your niche! Usually, the blogs cover broad topics, but the articles will be relevant to your niche.
Authority:
Safe, white-hat approach. No PBNs, no spam links, no black-hat method. All links will be from unique domains, no duplicates!
Stability:
1) Latest Google Panda Update
2) Latest Google Penguin Update
3) Latest Google Hummingbird Update
Advantages :
