With the really simple captcha plugin for wordpress you can have a captcha system in place that blocks most or all of your spam accounts and posts. The really simple captcha plugin for wordpress is actually really simple to use
We've all been there when you see a prime source for a backlink and you want to get your post up as soon as possible to hopefully obtain that dofollow backlink and maybe some traffic. Right at the end of our posts we then get prompted to solve a captcha. Now captchas are easy for us to decipher, but for bots it's a lot more difficult because they can not recognize the text or images within the captcha and they fail when trying to post or register.
With the really simple captcha for wordpress you can have a captcha up in the matter of minutes and you don't have to code anything because it's a simple plugin
The really simple captcha plugin was originally designed to go with the plugin contact form 7, but it's so diverse that you can use it with almost any other plugin just fine. There are not many conflicts that I've seen myself or even read about, so you should be good to go once you download and configure this plugin for your registration form or posting sections of your website
The really simple captcha plugin will generate 2 files whenever the page is loaded. One of the files is the image you see, it could be an actual image or some text that you have to copy. The second file is a text file that you do not see and it's job is to make sure you're inputting the correct text. If your text matches up with the text in the second file, you've solved the captcha! It sounds simple, but the programming behind this plugin is pretty extensive.
This plugin has over 1,000,000 active installs and yet it doesn't have many reviews, it's possibly the best plugin to help you fight spam comments and spam registrations.
If you're in the market to find a captcha system that isn't difficult to work with, and you are on wordpress, check out the really simple captcha plugin and you'll be happy you did