Hi there. I'm a relatively new SEO - well new to black hat SEO anyway - and my site was hit hard by Panda 3.3. I've been tracking our site in conjunction with our 5 top competitors and it looks like only one other company took a nose dive over the past few weeks. One company, though, has proceeded to continue kicking a** in the rankings so I am researching their backlinks right now. It seems like this company is relying on a strategy of getting links from sites that are primarily used for SEO purposes... not "private blog networks," but rather, sites loaded with articles filled with relevant keywords. They are readable to humans and definitely were written by someone with authority at some point. The site mostly contains internal linking to other pages on the same site but it has an ad for our competitor just ONCE on the sidebar. So the number of OBL's is very low, and as far as I can tell, there is only ONE external OBL - to our competitor's site. They have hundreds of links coming from subpages from sites like these. I can see why search engines would be confused into thinking these are great sources for backlinks. But to the human eye it's pretty obvious that these are poor quality, even scammy sites. So my question is, what are these? It's pretty obvious they're run by the same company that features the link pointing back to them, but who is maintaining them? Who is writing these blogs? Isn't Google savvy enough to figure out that they're hosted by the same person (or even if they aren't, can't Google STILL figure it out that the same company is orchestrating this?) Thanks. And sorry if this is a total newb question... I'm still figuring all this stuff out.