I suggest you check out tumblr. Perhaps it's just the old guard that resists the Whovian term.
It may be more of a generational than nation thing.
Maybe it's a bit of both? I don't know any other British fan who calls themself a Whovian (or who doesn't detest the term!) - but then I don't think I know any fan under the age of 35 either!
I know not this tumbler of whom you speak.