If your SEO anchor text strategy has been the same for the last few years, you may just want to check out this SEOMoz post or watch the video below.
In this short 7min video, they go over things like:
- Exact match vs partial match
- Context, placement and relevance
- The future of link signals
Another highly interesting SEOMoz article is their 2011 Search Engine Ranking Factors, definitely some interesting insight.