Windows 7: DOS storage in ie9

My bad DOM,
Is this a necessary thing to have,
I read a little about it and it seems to be just a cookie storage location,
Do I really need another windows temporary folder accumulating garbage or not ?
If you go to internet options/ advanced and scroll all the way down the list it's enabled.

Some background info:

Introduction to DOM Storage

Yes that was the reading I was referring to,
But this seems not a very useful thing for me personally because I do not have a domain I want to police, and don't have a couple of other users I want to be big brother of,
It just seems to me to be another dumping ground of garbage files from microsoft ?

DOM Storage was part of HTML 5, now its own standard. Not a dumping ground from Microsoft.
https://en.wikipedia.org/wiki/Web_Storage

If this was really necessary there would be no way to 1) disable dom storage and 2) clear it with browser history and cookies.
My conclusion is disable it I have enough junk to keep up with from microsoft,
Thanks for the input.