I was surfing the mobile version of MR on my iPod Touch and accidentally hit the "search forum" link and was sent to a "Tag Search Cloud". I'd never noticed it before, so I hopped on my laptop to double check and I see that "Tag Search" has been added to the search function (up in the blue bar).
Have I been blind and this cloud search has been there the whole time (or a while) or is it a new feature?
I guess we have to get better at tagging our threads.