Welcome to the Q&A Forum

Hmmm... This is a hard one. (Oh man, did not mean to make the intentional sex referrence) Yes, Google has made changes in it's algorithm in the past year that makes porn harder to search for on the Internet. These changes don't filter the porn per se - except when "Safe search" is set to on - but it does mean that you must be much more specific in your search queries to find what you are looking for. For example, the query "boobs" generally returns almost no porn in Google, but the query "boobs porn" will. If I were building an algorythm to separate porn sites from non, a large amount of XXX in the incoming anchor text, or in the URL, would probably trigger it. Oh the other hand, I'm inclined to agree with George - seems like there's something more going on here. The backlink profile isn't terrible.... but there's definitely a footprint of comment spam in there. I won't link directly, but some of the suspect, off-topic links I found include: http://www.takarat.com/forums/showthread.php?tid=750&page=3 http://www.omyogapages.com/forum/showthread.php?t=43&page=7 http://www.atthepicketfence.com/2011/09/behind-blog-with-savvy-southern-style.html http://www.marypoppins-homesweethome.com/2011/07/what-is-it-with-us-girls-and-ikea.html These are pretty terrible   It's possible that there's 100's or 1000's more we're not seeing, and these are causing either a manual or algorithmic penalty. My advice: Check with Google Webmaster Tools for any messages - especially unnatural link warnings. File a reconsideration request, even if you don't have any messages in GWT. Explain your concerns. Matt Cutts, the head of the Webspam team, helped write the original adult filter algorithms. He might take a special interest if you can get it to his attention. But mostly, what you're looking for is verification, or not, of a penalty. You may need to clean up the links. Do your best to remove any suspect links. Use the disavow tool as a last resort. Hope this helps! Best of luck with your SEO.