Over the past week, SEOs and SEMs have noted some significant changes in the search engine results delivered by Google. Google appears to be actively cleaning its listings by targeting sites using suspicious link-building techniques. A couple of well-known search engine marketing sites have vanished from Google results under keyword phrases they dominated just last week.

Over the past week, SEOs and SEMs have noted some significant changes in the search engine results delivered by Google. Google appears to be actively cleaning its listings by targeting sites using suspicious link-building techniques. A couple of well-known search engine marketing sites have vanished from Google results under keyword phrases they dominated just last week.