* David Gerard <dgerard(a)gmail.com> [2013-01-20 22:23]:
The MediaWiki captcha is literally worse than useless:
it doesn't keep
spambots out, and it does keep some humans out.
I can't speak for WMF sites, but on my small wiki, it *does* keep some
spambots out. Not all of them, but it is still quite useful to have