tedster - 11:58 am on Mar 21, 2012 (gmt 0)
We don't normally publish links to other blogs and forums, except when the link points to information from official sources of some kind. However, we'll make an exception in this case because the meta description test is interesting and it seems to change the previous status of the element.
I'm not clear how a meta description could be an over-optimization target. Maybe if it was stuffed to the gills or something like that? How very old skool that would be!