I just wanna add, I've been using it for a week now.

Since I only use white hat for my clients, I'm a little worried at the link velocity, but I've adjusted that down to very low to compensate. For one of my clients websites, it went from #10 to #5 for a term that gets 90K searches a month, which I can safely attribute to this.

I like it, and will probably continue paying as long as it stays adult free and people continue using it properly.