Ok, That makes sense. Anyway, It's a good tactic for driving traffic. I did and It's effective.Powerful? It has not been powerful since like 2008. Then it became kinda decent, now it's redundant. It's okay to spread out your anchors and diversify your links a bit, but all in all, I consider it to be not worth the bother. Not for SEO at least. For driving traffic... that's a different matter, but that requires completely different approach.