[pidg]

I don't feel they are necessary, even for less advanced users. Apple do a reasonably good job of keeping things safe and up-to-date.

The number of users may also reflect their pushy "you need this!" marketing. I installed MacKeeper a few days after switching from Windows to Mac, as I had no idea what I was doing. Ended up uninstalling it, then reinstalling OS X from scratch just in case.

[parandroid]

That's what I thought, thanks. I'm a newish Mac user, so I was a bit confused by the whole situation, since other Mac I know told me not to install anything of that kind.