Over the past two years I've been using PBNs cleanly to rank many of my clients in the top 10 for competitive keywords.. really dominating local niches specifically.. Now I'm not sure what happened but in the past month I'm seeing a lot of my clients slip down position after position for every single keyword.. the same ones I had used highly secure footprint safe PBNs for.. They haven't completely gone off first page but it's going down to bottom of 1st - mid 2nd pages and my clients are starting to question what's going on.. I had a client with no over-optimized anchors or anything of that sort who has been #1 for 20 keywords for the past two years and he's now slipping to mid 1st page - bottom 1st page... The past few weeks have been really bad, is anyone else experiencing this? I make sure to be very careful with my anchors and have good distribution, I also post articles monthly on my blogs to make sure I have other articles on there.. I also create other links like editorial power links / local citations / social bookmarks / 2.0's etc. Definitely starting to get worried.. back in October that update was magic for me.. clients were moving up daily and positions were changing positively all the time.. I even had some clients recover from the old Google penguin update.. now it's all going downhill.. I created two new contextual links recently for a promotional product client on my relevant niche PBNs, back in October he would've been up there within a matter of days already getting traction.. now the keywords haven't even popped up on Google yet and we're 2 months in..