How much "Junk" should there be?

CCleaner for Windows
1

I seem to clean a lot more junk from my PC now than I used to. A quick example:

A few minutes ago i ran a CCleaner "Cleaner" after closing all browsers etc. It ran and deleted a lot of junk.

Five minutes later after visiting one website and rerunning Cleaner there is another 47.1MB of junk removed. THis is at the lower end of what I sometimes findf. Is this more than would normally be expected and why?

2

There have been reports that some users are seeing vastly inflated file sizes for the junk to be cleaned, often more than the size of the Hard Disk.

3

Getting 47.1 MB from a single website isn't really alarming to me. That much could be attributed to video's being embedded into a website, or some other bloat. Some even show video ad's.