Relevant comments add great SEO benefits as it adds content to your blog post and makes your post fresh in the search engines eyes. But comment spam is the pain the a$$ for blog owners to make the most of wp comments. Given below are ways to prevent comment spam.

1. Install and activate akismet comment spam plugin.
2. Do not have comments auto approved
3. Check for automated comments for softwares and bots and do nto approve them (it gives a sign to them)
4. Approve...