experienced - 9:15 am on Feb 5, 2009 (gmt 0)
Post is excellent but this is more on the on page hacking. what to do when you dont see any changes like hacking for placing links in your content, allowing all indexing through robots, no unkown external links placed, content is clear. i have checked the site completely except log, seems there is no issue at alll. but still my 6 yrs old pr 4, site is gone from top to bottom in just 4 days. 60% traffic reduced from 1 feb to 5 feb.