I think YOU are talking about posting PRODUCTS, while I am talking about REVIEWS. I don't see a review at all in the link you gave, just an uploaded product.
My users will not have the ability to upload products, just to rate them. And like I said, each review lists the username plain and clear in the table, along with information such as when they registered, and number of posts. This is all listed under "Author".
So I guess the search by username is not searching reviews at all, it is actually only searching products. And I can see that this would be the norm for necessity of the product, but it doesn't suit my highly customized needs.
Therefore, I will have to adjust it on my own.
Thanks for your help (??)