app updates

On my MackBook Pro I have a couple of accounts other than the administrator's. Often a notification of a program update will come when I'm in one of those other accounts. For some reason going back many years I always have only done updates in the admin account but am questioning if this is...

Over the past couple of days, the red badge with the app update count in the App Store has stood out to me as something new (I could be wrong). This is the same look as the iOS software update badge.

I am looking for an awesome app that will help me keep all my application up to date. I am also looking for an application that when I remove an application it will removed all the bits and pieces that with it, it would be great if it could also find abandoned remains of applications delete...

I have a question regarding the size of the app updates. When i download those updates for my apps for eg. FaceBook i see that the file size to be downloaded is 170mb. Are those 170mb added to the existing app file size or is the app file replaced by the 170mb update? So when making multiple...