No one here wants to hear this or admit it, but we are in the age of the MAC VIRUS and until we admit in, we won't be about to address it. I am in IT and I have seen a 2000% increase in cases of clients claiming to have a Mac virus. While there's some discrepancy about the technical definitions of what is a "virus" and what is "malware", to the average user, pop-up windows, redirects, browsers hijackers and apps you can't delete constitutes as a "virus" in their minds. I've seen it with my own eyes. This MacKeeper thing... Deleted it multiple times from the Application folder and keeps coming back. I don't care what you say about dragging the App to the trash, THAT DOES NOT WORK when it implants multiple files like MacKeeperATD into the Library folder which is now hidden by default. I would have never noticed if it weren't for a thorough inspection in the Activity Monitor. I've seen Safari hijacked to no end where normal text on the page was converted to links and even Gmail.com was redirected to some bogus phishing site that wanted to steal passwords. This isn't just me being an alarmist like so many in the past have freaked out at a couple of pop-ups, the Mac platform has grown so big that it's now a target... A big one. I think it's time to accept this fact and address it rather than ignorantly deny it. I used to get a call about once a year for this tye of thing, now I get them every day. As I was writing this, someone called asking if I could wipe their drive because they couldn't get rid of Advanced Mac Cleaner even after trying ALL OF THIS. The pc guys keep detailed lists... Not of just the apps, but the system files, processes and dlls. Do we have anything like that for Mac? Not really. I google helperamc and didn't really find much information, but I'm sure it's part of Advanced Mac Cleaner.