Mac Keeper, warning about it.

Hi all. I've come across this dialog a couple of times, I'm 99% sure this is bogus but I wanted to warn you or see if others knew of it. mac keeper pops up like the old fashioned Windows dialogs I hated in I.e. I had to use Voice over F 2 to get it to go away. It pretty much is a pop up saying my mac is full of junk and wants me toclean it. I googled it, and it seems like a piece of advertising software. Thought I'd tell people in case they see it. Click cancel. That should be obvious. To let people know where I found it, I was reading the morning news and happened to see it. Hopefully eventually this won't happen again.