Hi Mark, thanks so much for responding :)
It is comment spam. I've used the blacklist from hackrepair.com
In Wordfence I have manually blocked all new spam comment IP's that we are getting. Each day there is new IP comment spam. So I add the new IP as blocked permanently. Are there an extra measures that I should take that I am not aware of?
Question: Is it possible to reduce spam to nothing? (I want to know what my client can expect from me) - if not - in general, what is a reasonable amount to stop fighting against?
Question: In Wordfence - how many blocked IPs are too many? If the list keeps on getting longer will it slow the site down? How do people handle that list?
In WORDPRESS > SETTINGS > DISCUSSIONS I have added a few words in the "Comment Blacklist" box - but I don't want to add words that might be legitimate....any insights on how to refine it as much as possible would be great.