mslina2002 - 1:56 pm on Feb 28, 2012 (gmt 0)
Link evaluation. We often use characteristics of links to help us figure out the topic of a linked page. We have changed the way in which we evaluate links; in particular, we are turning off a method of link analysis that we used for several years. We often rearchitect or turn off parts of our scoring in order to keep our system maintainable, clean and understandable.
I have read in other forums that some have been complaining about this. They were talking about their usual way of creating backlinks. I don't think backlinks are phased out but most likely G is looking at quality and how these backlinks are created aka spinned content, link wheels. If you have not seen changes regarding this you are probably not affected.