Comments on a blog shows that how interactive is your post and even shows a glimpse of already built community around that but when you start getting noticed by human, then Spam also attack hugely to your blog. Yes, it is true that Akismet or other spam filters does their work but still sometimes few spam passes the tests set by these filters are accidently you also approve those comments in hurry. To make sure that you blog is not driving traffic to some Viagra or adult site, just perform the following activity.
1. Login to the Dashboard of your blog.
2. If you are using WordPress, Go to the Comments section of your blog by clicking left panel tab names “Comments”. If you are using some other platform, enter into the comments section of your blog where you actually approves or deny comments.
3. On WordPress, you can search comments by hitting your search keyword at the right – top corner of the comment section. Try to find terms like Loan, Sex, Viagra, Porn etc over there and see if any results appear for that. If does so, then delete that particular comment from your database. It is really important to avoid having such comments on your system for security concerns as well.
Advice: You can avoid having spam thru comments by using math option, Check the demo of math option on comment section of this blog as attached below.