We are hearing that Big G is gonna made a lot of changes in few up-coming months, this video is pre caution for us:
NOTE for Admin:Code:http://www.seomoz.org/blog/6-changes-every-seo-should-make-before-the-over-optimization-penalty-hits-whiteboard-friday
"Admin hope this is relevant category for this thread, if not then move it to the relevant category, Maybe this topic has been discussed before here on this forum but I think this video is more informative"