The phpNuke community in general are sick and tired of having their site content devalued with comment spam.
Whilst there are a number of measures (as the site webmaster) you can take to limit the amount of comment spam, sometimes there are reasons for you not to undertake such measures.

For example, swtiching the permissions access to ‘Registered Users’ for the Reviews module can help eliminate atomated bot comments in that module.
Likewise, disallowing anonymous News module comments can help reduce automated bot commenting in the News articles.

Regardless of what methods you employ, Code Authors Comment Module will help you in your fight against comment spam by giving you a quick, simple and easy to use interface to view the last 50 News module comments and Reviews module comments.
You no longer have to scroll through screens of admin functions to delete a comment, you can do it right there within the Comments Module admin interface - all it takes is for you to click the ‘Delete’ link and the comment is gone!
In the case of Parent comments where additional comments have been made (child comments) - when you delete a News parent comment, all the child comments are removed with them.

The module is easily installed by simply uploading the files to you website, there are no database changes required and - thats it!
You know have an extremely easy way to monitor and delete comments from your site!!