My dear friend Mr. Pat discovered this gem at a mall in the Bay Area. After a few trips to mall he had to point out the error to a retail clerk. Funny they had not noticed it before.
I post this to show my respect for the Compulsive Proofreader. A one time blogger who shared his compulsion with all of us. I know he is very busy, but we miss him all the same.

Wow, that is not good at all.
You said:
My dear friend Mr. Pat discovered this gem at a mall in the Bay Area. After a few trips to mall he had to point out the error to a retail clerk. Funny they had not noticed it before.
I post this to show my respect for the Compulsive Proofreader. A one time blogger who shared his compulsion with all of us. I know he is very busy, but we miss him all the same.
Corrected Verse:
My dear friend, Mr. Pat, discovered this gem at a mall in the Bay Area. After a few trips to the mall he had to point out the error to a retail clerk. He found it funny that they had noticed the error before.
I post this to show my respect for the Compulsive Proofreader. He was a one time blogger who shared his compulsion with all of us and I know he is very busy, but we miss him all the same.
Errors Reported:
Missing word and commas, incorrect grammar application, numerous run on sentences.
Score: 6/10
Recommendation: English Grammar for Dummies