No offense taken. JR is right, I was just kidding around because I found the ad humorous. Never intended it to be mean toward the seller... I guess I just found it amusing because the air-intake in on the opposite end of things and keeps "stuff" out - while the spark arrestor keeps "stuff" in.
I find humor easily... and do not mind if others laugh at my mistakes. I will likely be laughing at myself, long before anyone else gets around to it. Have a great day.