I'm not identifying that particular profile since they only had one review and I'm not trying to start some sort of shitstorm on someone over something that may or may not be a commercial (paid) review.  (Not all fivver accounts and services are for review writing.)

I also am not trying to get the profile flagged because I suspect all that might happen is that they remove the website link to fivver.  It's better it's there, in my opinion, so you know they are a paid reviewer.  I'm not sure I care enough anymore to click the link to see if their one review was a paid one or one with material connection such as being the editor/promoter/proofreader/ghostwriter so should be flagged (I'm not sure that wouldn't also just make them remove "fivver" from their profile—might be better just to file FTC complaint if the review was a paid one not disclosing payment or some sort of material connection also not disclosed).

Goodreads issued a reminder about paid reviews in the Authors Feedback group:

"… everyone that commercial reviews -- meaning reviews you paid to receive -- are strictly prohibited on Goodreads. This includes reviews purchased on pay-for-services sites like Fiverr. Not only will we remove any commercial reviews we find, but as an author, you may be removed from the site for purchasing reviews…"

The thread could get interesting, particularly if staff join the discussion versus just issuing the note and disappearing.  Personally, I had to ask:

"...does goodreads, like the FTC, consider exchange/assigned/return author reviews "paid" because paid with return services?

If so, provided properly disclosed like free-for-honest-review books, does goodreads allow them?"

(Not sure what percentage of goodreads authors belong to or how many goodreads ornon-goodreads  authors will see; just thought I would share in case anyone missed or was interested in the thread.)