I do so admire the Ed's energy and enthusiasm for her job, and it's nice that she's asked what we all think about it before it's set in stone.
I think it's a good idea in principle although it needs a few wrinkles to be ironed out:
Changing every 10 secs is far too speedy. I've thought a couple of times that something would be interesting to look at, but by the time I've finished what I was doing it's disappeared.
As lots of people have pointed out it interrupts what you're typing, and makes scrolling down very awkward. This is obviously a technical problem which hopefully can be overcome.
However I'm sure we'd all appreciate it if the next object of her attention was the search facility.........(and then a rethink of Sports AB)