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luckily I have never had that problem, also it seems that you will be alerted in you webmaster account if someone requests a takedown. Still an interesting "black hat" technique to remove competitors out of the serps that might not have webmaster accounts

Hey Gerd I tend to feel that in most cases a responsive design is going to be the best approach or failing that, an automated mobile site much like WPTouch for WordPress. There are lots of reasons why I feel different mobile sites are a bad approach and just the physical management of two (or three) sites along with the optimisation etc is reason enough for most businesses to want to simplify their approach with a responsive site. As ever though, there are always a lot of moving parts and the right answer is the answer that is right for the specific business. For us, we use WPTouch on the back of WordPress and will be moving to a fully responsive site when we next do a redesign. I rattled out some of my thoughts on mobile sites and SEO here: http://www.bowlerhat.co.uk/blog/responsive-web-design/ I think the very fact that responsive is Google's preferred approach is reason enough for most people to take that approach. Couple that with the simplification in the management and reduced workload over running multiple sites then it is the most common sense option for most folks. Of course, this does not stop you serving up content via specific applications on smart phones and other devices but that is really outside the scope of SEO considerations. Just my tuppence / 5 cents! Cheers Marcus

Dr. Pete, Do you have any search/sort filters that may be spinning out other copies, beyond just the paginated series? That could be clouding the issue, and these things do get complicated. - How about this is the case? What would you recommend? Gary