Matt, of course I meant the "search" facility, just type in "mirror clean" and there's a thread I remember where people discussed their varied and different methods.
I've done just that, and found
the thread I was talking about.
My thoughts (in that thread) contradict with Robert_T's above, but it doesn't mean i'm right and he's wrong.. Everyone is free to make their own choice.
Have a read and see what you think, to me it's not scary to clean a mirror (I did mine again 2 weeks ago) but for others it can be.
Louie and I had a discussion about it the other night, his opinion is similar to Robert's, so it just goes to show that in the end you'll need to make up your own mind