Spammers have become increasingly creative in their methods of generating spam comments on blogs, and many bloggers are struggling to find a way to stop them. Some methods that have been reported to work include:
1. Use a spam filter.
A spam filter can help identify and block spam comments before they are posted to your blog, but be warned that some filters are less than perfect and may mistakenly block legitimate comments as spam.
2. Use WordPress’s comment moderation features.
WordPress provides features that allow you to moderate comments before they are posted to your blog. You can choose to allow all comments, only allow registered users to post comments, or only allow comments that meet a certain criteria (for example, requiring that the commenter has been a registered user for a certain amount of time).
3. Use comment moderation plugins.
There are several plugins available that provide the same kind of comment moderation features as those offered by WordPress. If you want to use a plugin, be sure to read the instructions carefully before installing it so that you know how to use it properly.
4. Use flagging tools.
Some bloggers have found success using flagging tools such as Spamhaus or The Block Bot to identify spam comments before they are posted to their blog. These tools allow you to add specific keywords or phrases to your spam filter so that any comments containing those words will be flagged as spam and will not be posted to your blog.
Although there is no one solution that will work for everyone, using one or more of the methods listed above should help you stop most spam comments from being posted to your blog.