Was looking for a specific wallpaper - a Back to the Future one - and I usually use AlphaCoders, but their website is down. So I went trawling through the internet and went through various sites, and eventually found the wallpaper I wanted and downloaded it. I closed that window, and behind it there was something called MacKeeper, like a pop up. It reminded me of one of those Windows XP cleaning sites, so I closed it. I then Googled the program to see if it was a virus or whatever, and it took me to http://mackeeper.zeobit.com/download2012 which is different to the popup. It automatically downloaded MacKeeper.2.1.2.pkg. I scanned it, came up clean, but I haven't installed it, because I don't want it. I deleted it, as I had intended to download it. Anyway, am wondering what it is. Is it malware, a virus? Or is it a legit program. I don't want it either way, but I don't want my Mac or any of my files infected with anything. Thanks.