yesterday i found my sites traffic all decrease suddenly without any resons. i have sites code, keyword postion and even sites PR. they are all no changes. i can't find what's the problem. and this problem is even bigger than yesterdays. anyone has the same problem like me? what can i do?
-my sites are selling the same products but with different codes and contents
-i hire five men making links by hand every day
-sites number: 15
-my sites are selling the same products but with different codes and contents
-i hire five men making links by hand every day
-sites number: 15