Skills - SEOs need in 2013

I have read a post in seroundtable.com which suggest what skills the SEO people should need in 2013. It advises some essential skills are listed below,

1. Knowledge of creating a search engine friendly websites with out having any duplicate and canonical issues.
2. Mark-up languages such as Micro data(Google recommends), Micro format, RTF and more for rich snippets.
3. Knowledge of analytics, social media, more about content marketing, and even more about link bait.
4. Apart from the above, we should have the knowledge to deal with Google Panda, Google Penguin, Pagination, EMD, Page Layout, and more Google algorithms

Source: http://www.seroundtable.com/seo-skills-16288.html