This may have already been asked (I didn't see anything) but i've noticed some craziness between 5 different sites i manage. 1) One of the sites had it's traffic jump from around 1,000 visits a day to 1,900 visits a day. This site is about 12 years old usually has pretty stable traffic. 2) Another site i have had it's traffic halved. This site is 2 years old. 3) Yet another site had it's traffic reduced by about 30%. This site is 9 years old. All were whitehat sites.