Yep, that's about the size of it. The mods do a pretty good job for us, and it'd be hard to have a site dedicated to equipment without people talking about items they've found and what they're like etc.
I liken it to a Buyer's Guide publication that takes products and does practical research on quality, usefulness, performance, price, availability. Saves me a lot of time and money if someone else takes the plunge first and tells me about what they found, especially if it's someone with interests common to my own and others.
Product peddlers get pretty obvious about their intentions. You won't see that on this forum much. If you do, there's about 20 or so folks that will call them out and the mods usually dispatch them shortly thereafter. There is opportunity here for folks with a product to sell can tell us about it, but like Chris said, there are limitations they must abide by.
Last thing I remember posting about was the KA-BAR folder I carry. It was probably too long a post, but I felt given that we dedicate so much of our traffic here to the discussion of knives that I ought to elaborate some. Telling all about it didn't garner me any favors with the company, and didn't enhance the value of the knife I already had, just let everyone here know what I thought of the thing. I reckon that's what we do here, so it seemed appropriate.
Otherwise, all we have to talk about here is another poor sod who decided to climb Mt. Hood without being properly prepared and burning up more tax dollars in his needless resuce. Good debate value, but a bit less informative perhaps, or maybe not.
I dunno, I just like to come here and read what y'all have to say.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)