No hacker skills needed, just experience and a healthy mistrust of the internet.
Step 1: Just copy and paste a chunk of the text into any search engine and see how many other sites have been spammed.
Step 2: Report spammer.
I sometimes do SEO fixing and consultation, and so know the tricks people use.
These days the search engines are aware of repeated spam SEO, and so it now harms their listing not improve it.
They offer a service that guarantees x-number of inbound links and good reviews, so they visit forums, review sites and sites with comment boxes, then paste the same generic messages everywhere, and always with bad English.
For forums, they try to make it look informative so that it does not get deleted.
For comment boxes they say generic things like "I found this very interesting, and I will be recommending my friends".
The biggest clue is that when you check whatever link they give it will be a business that sells stuff.
Comment boxes often let you add a web address to the user name, so even if there is no link in the text, there is one still there.
As a matter of standard practice, I always check the address of any suspicious site at the Web of Trust site.
If the site has been around long enough, or created any controversy there will be some comments.
I am a constant contributor to WoT and Virus Total comments/reviews (as should every person that wants a clean and trusted web.)
Good reviews are as much in need as bad ones, so I thought I should update my review of this site since I have been a user here for a while.
https://www.mywot.com/en/scorecard/newb ... ground.net
As you can see not enough people have rated the site for it to get a thumbnail or coloured status
Admins of sites are encouraged to claim their ownership to add increased trustability. This helps to keep your status clean and green if the comments show opposing views.
.....