Ok, I had some spare time and I has a few sites I wanted to use for testing.. I purchased a few PBN's several years ago for a few thousand dollars and just recently decided to use them as money sites. I also created a brand new site to compare results. Now for years I always thought that google sandbox was only done on a domain level, meaning once you domain has finally passed that period, you're good to go. But from my own findings it seems that it's also on a page level, despite my domain being very old, naturally ranking for keywords just by domain authority, when I created a new page on the domain and tried to rank it, the page exhibited sandbox like behavior. I pretty much used this same process for each site: 1) Create a new page on the domain 2) Send no more than 11 links a day, one of which is a PBN 3) Submit the 10 out of the 11 links to google url submit (to speed up the indexing since they are web 2.0's). 4) EMA less than 5% PMA less than 5%, the rest is branded, etc... Now I did this with 3 domains, 2 aged domains and 1 new domain created 2 months ago and the results were exactly the same. The only difference was for the aged domains I targeted the inner page and for the new domain I targeted the homepage. Here was the result for the new domain (registered 1-21-2016): All the other keywords for this domain shows similar movement. This is the results for aged domain 1: So, basically my question is, are you guy's experiencing the same thing? In my case, it might be because these sites (despite being aged and having a great backlink profile) haven't been liked to for years. So the surge in backlinks could have triggered googles algo to render my links useless until this period has passed http://www.seobythesea.com/2012/08/google-rank-modifying-spammers-patent/ or it could simply be the sandbox period which I would need to wait to pass. But im not sure, so any insight you can provide is much appreciated.