Google 50 changes for March, including two that concerned anchor text. They were:

"Tweaks to handling of anchor text. [launch codename "PC"] This month we turned off a classifier related to anchor text (the visible text appearing in links). Our experimental data suggested that other methods of anchor processing had greater success, so turning off this component made our scoring cleaner and more robust."

and:

"Better interpretation and use of anchor text. We’ve improved systems we use to interpret and use anchor text, and determine how relevant a given anchor might be for a given query and website."
(source: http://insidesearch.blogspot.com/201...0-changes.html)

They are vague (as usual), your thoughts please on what they may actually mean?