Yes, I have a product review blog that was raking in good cash. I did lots of backlink and it was successful - it manage to hit the first 2 position in Google for the particular term (e.g:xxx review). Suddenly, my site went missing when someone tries to search for the exact term. But when they enter other keywords like xxx vs yyy, my site will appear. And no, it's NOT a Google dance. I've been through that. Before the "ban", my site was still ranking in that term for 2 months or so. Is this a Keyword Ban?