Re: Dear BBC,
"[...] we will also be introducing some creepy web-DRM and forcing you to log on."
It appears that the BBC are being a bit naughty with their mandatory login to iPlayer.
The login persists across their other pages too - and they appear to intend to use it to automatically "personalise" news and tv programme pages unless you untick a lot of boxes. Shades of Facebook.
I am now using Chrome for iPlayer only - and "no login" Firefox for any other BBC pages.