What is also very helpful is the fact that it is distributed with a bundle of form-examples which makes it easy for one to understand the mechanism of BF and the scripting behind it in the engine.
Of course an excellent working Captcha is present and if wanted extra protection with Jollom (Mollom) can be added. Suite comes also with a module and a content plugin to load the forms in content articles.
Some video-tutorials are present but the product lacks indefinitely adequate documentation. That needs improvement, especially for end-users. Therefore 4 stars instead of 5. All in all an excellent and reliable product with perfect support!
pro: works in register & password & email
con: no refresh button/ no disability (announced next release)
still missing: Captcha on login module
with refresh and module captcha i would rate good. Add than disability you get excellent.
one hurdle taken though!
Captcha on login module?
I think this would be an overkill and not user friendly. Even without the refresh feature (which would require AJAX and thus be unfriendly for accessibility) if you fail to get the security code the first time, then the application form is presented again with a new code and all (but the password) fields are kept intact.