Strategies for Preventing Comment Spam
Source: selfseo.com
Bloggers are painfully aware of website owners who try to improve their website’s rank by adding links to blogs. There are several strategies for combating this problem. The first and most obvious method is to avoid free blogger sites. These are favorite targets for comment spam.
Bloggers who own their own software can add a no-follow tag. The rel=nofollow tag does not stop the spam, but it does stop robots from following the link. Blogger, owned by Google, implements these tags already. Wordpress has anti-comment spam plug-ins to help bloggers stop comment spam.
Do not bother banning the IP address - unplugging a computer for one hour can change the IP address, and changing a server’s IP address is relatively easy. Some companies buy IP addresses in blocks of a hundred or more, and spammers also use open proxies. These are IP addresses that allow anyone access.
Configuring a blog to prevent javascript and HTML code in replies is a solid and easy to implement method of attacking comment spam. It is possible to configure some blog software programs to automatically convert any string that starts with http:// into a url. This will not stop manual comment spams, but it will stop the crawlers.
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