Which SEO service works best to rank your website?

Link building is one of the most discussed topic in every forum or on any discussion board when it comes SEO or internet marketing.
It comes in two types and forms, white hat and black hat; manual and automatic.
In these types and forms, there are various strategies that you can choose from.
There are also others who offer their seo service with backlinks or link building solutions.
Depending on your needs, you just have to select the one(s) that works best for you.

I wonder, which seo strategy or service that works best to rank your website? How's the result?

As for me, manual high PR do-follow blog commenting service is the best, and it can catapult your blog, website, or business into greater heights.
How about you? care to share...