Since I release WordPress Theme Changer & Showcase Plugin, my blog become spam target. I don’t know why? But its oke, there’s some great spam fighting plugin that i can use.
You can verify the reasonable comments and stop the spamming comments through random codes in image by using AuthImage. Its features as below: * Easy to use * High performance * The generated image has some interfering ion to prevent spamming from getting the codes * You can manage the parameters(length,type,background color,text color,interfering pixel color) in wordpress control panel.
This plugin shows a distorted text image the user has to identify to allow his/her comment to be accepted (only appears to unregistered users).
Asks a simple math question to ensure that the person at the other end is a person and not a spamming robot. A basic example of a turing test.
A lot of plugins provide spam-controlling system using CAPTCHA. It used OCR system to avoid the spambots make comments. The system used image to display the words so only human can read the words and fill the form using the words provided in the image. Of course it need image processing library like GD Graphics Library and ImageMagick. But how about the users who don’t have image-processing library installed on their server to generate those image words? And how about the people who turn off the image loading option on their browser or using text-based browser, like Lynx, reads those words? Introducing matriphe! KeyCode which provide a simple plain text as a keycode. The main idea was helping users who don’t have any image-processing library installed on their server. It is also usefull for people who disable the image loading capability on their browsers or using text-based browsers. Based on my opinion, a random machine generated keycode was annoying. I prefer human-friendly words as keycode to random machine generated words. It’s easy to write hello rather than h3ll0, right? So do this plugin. This plugin use the name of animal in Indonesian language as keywords. But don’t worry, you can also specify your own words as keycode from the admin panel to suit with your language.
A plugin which identifies and blocks comment and trackback spam on blogs with integration to various blogging systems.