Alright, so I've been working on a niche site recently, I'd say medium to high competition. I've been fairly careful, drip feed most links (lots of private blog posts). I've been ranking between #8 and #12 ish for the last few weeks, bouncing around occasionally. I have some more high PR blog posts being dripped over the next 30 days (started a week ago). As of yesterday, I noticed one of my keywords (the main one I'm targeting) has dropped significantly, when I check with Market Samuai and RankTracker. It's weird, because I clear cookies, history, everything, and search manually on Google, and my site is still where it usually is. But get this, a few times when I've checked (again, cleared everything), my site is no where to be found. But when I check 20 minutes later, it's back there. I've also checked using a few online SERP checkers, and they show my site where it should be.. So I'm kind of panicking now. Does this seem like the G dance, or more like a penalty? And why are these softwares showing the ranking at like #250, while manually it shows up at #8 and such?