Dawg...Geo...Hello et. al.....
I agree that the nature of the reply was commercial but it was in response to a direct question AND he clearly identified his commercial connection in his signature so as far as I am concerned...it was a legitimate post in answer to a direct question by someone who has some knowledge to contribute. I think the commercial guys have a lot to add here as long as they keep the balance between advice and self-promotion tipped toward the advice side!
I also think that when we look for stuff on line...we remember who sponsors this board and give them a shot at competing for our business whenever possible!