If i use captcha will i be able to stop the spam completely in my blog?

Question

I have a Wordpress blog and the only user input is the commenting system. I want to totally avoid spam comments. Wordpress comes with Akismet but I can also use Captcha. Whi

Answer 1

Captchas aren't perfect. I've heard of people (e.g., from India) solving captchas for cash. The best way to stop spam is a combination of:

• Captcha: proof that the user is human (although some bots can crack them). Harder captchas are harder to crack!
• Akismet: test text for spam. Also not foolproof because some messages still may come through.
• Authentication: when you authenticate users as legitimate, I think you can stop spam completely. E.g., a user becomes a trusted poster after 5 spam-free posts.