Posting to NGC4LIB
While this is neither a very fun, nor an uplifting map, it is one that I am sure will strike many others on this list personally, plus it provides yet another example of the possibilities with the new informational tools today:
Public Library Closures in the UK
Zooming in displays closures and possible closures in highly graphic fashion, and for those who may be looking at their own neighborhoods, something like this may actually have more of an impact than simply reading words. From this map, it appears to me as if entire communities will be left almost with nothing at all.
I have found a similar one for the US for school libraries and librarians at:
These are built on a collaborative basis. I find both of them very powerful.