How do you protect your forms on the site from spam?

Question

Django

Recently I became interested in this topic and after reading on the Internet I came to the conclusion that there are the following alternatives:

• honeypot (free, but some spam still gets through)
  
• akismet etc. (paid, but gets the job done)
  
• reCaptcha and the like (I hate it on websites and try to avoid it whenever possible at work)
  

I found a number of algorithms (for example, Random Indexing, Support vector machine). Google Mail does a great job with spam. True, if I understand correctly, they have a huge opportunity to train the anti-spam system. It became interesting, what would you say, colleagues? How do you solve problems in your projects?

Answer 1

habrahabr.ru/post/151084/

Answer 2

CSRF protection, blacklisting spam bots. No spam.

Answer 3

The invisible "email" field protects perfectly. You can also try checking for Javascript. You can also add a "report spam" button for something that gets through.

Answer 4

We are satisfied with the cleantalk.ru service, the module is easy to install, it copes with spam perfectly and, most importantly, no captcha!

Answer 5

On the forums, pre-moderation of messages and an additional mandatory field. Usually, spammers do not move beyond registration. Apparently they understand that it is useless.