You can always rely on Google to change its logotype for Halloween (or any other less than ordinary day). Along with Google’s redesigned logo I found a couple of others that I actually liked.
My favourite is Vimeo a simple alteration to the regular logo. Some blogs (such as Thou Shall Blog have decided to make an apt alteration to their design — a nice touch.
However, as you may have noted I have not made any effort to adorn blog24 with such decor. The reason is simple. While Halloween is as popular as ever in the United Kingdom I am not a great fan.
Note: The link to vimeo actually links to a short film of my puppy playing, he deserves a little fame.