I love how simple and non-intrusive this plugin is for the login and forget-password pages.
But found a show-stopper issue: it does not seem to work with MultiSite. :-(
Are you planning to make it work for MultiSite as well? We'd be happy to help you test that when it's ready.
FYI - currently even if you "network activate" this plugin, the captcha only shows on the login page of the top-level site in the MultiSite. the sub-blogs login.php pages don't show it.
For multisite support, it should need a few changes, probably minor:
- would need to show on subsite.domain.com/wp-login.php
- would need to show settings at the "network" level instead at each sub-site level.