1. Search Metrics’ Domain Authority Consolidation: An Observation of dictionary.com
Dictionary.com consolidated its sub and root domain; search visibility took a great leap after.
2. SEO Theory’s How to recover from Google Penguin in less than 60 minutes
Countering Penguin penalty is a business, NOT SEO, decision. You should recheck your business strategy if your site is hit by Penguin.
Profitable niche is boring. Fashion, entertainment, food, and media – these fields are sexy but not easy to make money because of competition.
If you must buy links, do it the smart way. A reminder on best link buying practices (if there’s such thing).
Google bias towards Wiki proven in both author’s two machine-learning models. Wiki search visibility relies on relevant scores; rankings, however, does not rely on relevant scores. If a Wiki page is deemed relevant, it will rank high.