Spider Blocker

Apparently you need to keep your htaccess readable all the time or the plugin turns off.
I cannot find any info if the htaccess still needs the plugin to function after this.
This does not make me feel safe at all

Does what it promises to do. No more bad bots to my WP blog 🙂

I like that you can add additional bots. It does what it says and keeps the worst offenders of your page out of the box

It also didn’t crash my multi site or disable admin or anything (like “Stop bad bots”)

This plugin doesn’t work on any of my installations out of the box.
You need to change

$_ENV["SERVER_SOFTWARE"]

to

$_SERVER["SERVER_SOFTWARE"]

Maybe this should be adjusted ?
Once changed it does its job though!

This plugin does exactly what you think it does if this is the type of plugin you are already looking for. It is very simple and effective.