From Matt Cutts' blog
So autoblog/sites that do not have a lot of original content might see a drop in traffic. Anyone experience the drop yet on any auto blogs?
My post mentioned that were evaluating multiple changes that should help drive spam levels even lower, including one change that primarily affects sites that copy others content and sites with low levels of original content. That change was approved at our weekly quality launch meeting last Thursday and launched earlier this week.
This was a pretty targeted launch: slightly over 2% of queries change in some way, but less than half a percent of search results change enough that someone might really notice. The net effect is that searchers are more likely to see the sites that wrote the original content rather than a site that scraped or copied the original sites content.
So autoblog/sites that do not have a lot of original content might see a drop in traffic. Anyone experience the drop yet on any auto blogs?