Like many things in life, certain SEO tactics will fade into oblivion as Google Penguinmatures. This has left many people who used to practice the art of SEO wondering where to go.
The good news is that while certain SEO tactics may be under the gun and likely to fail in months to come (if they haven't already), other tactics are destined to succeed, impervious to algorithmic changes.
Many people believe that Search Marketing Integration, or SMI, is one of these. Some people have even gone as far as to say publicly that SMI will be required to rank on the first page of Google in the future.
Via Antonino Militello