Preventing Spam

Question

How do you stop bots on a page which is accessible to registered users only? 90% page is accessed by real users and 10% are bot.

I do not want to put captcha or veri

Answer 1

Since these bots don't follow robots.txt, you can always block them with an .htaccess, but it's lot of work (need to maintain the block list) since bots/spammers often change IPs. You also risk to block genuine users.

You can see Block Bad Bots for an example.

It can be useful but it's often too much work to block all of them VS let's say a CAPTCHA or similar system.