http://en.wikipedia.org/wiki/Howl%27s_Moving_Castle_(film)
http://en.wikipedia.org/wiki/Howl's_Moving_Castle_(film)
I was pretty sure that an apostrophe is valid, even unencoded... Not a major issue obviously, I've just seen quite a few posts with broken links which aren't getting "special characters" automatically encoded by the Editors linking tool and then people in following posts saying "Dead Link"
http://www.ietf.org/rfc/rfc1738.txt
bottom half of Section 2.2...
hus, only alphanumerics, the special characters "$-_.+!*'(),", and reserved characters used for their reserved purposes may be used unencoded within a URL.