It's funny, but since I posted this thread, one of the firearms I was shopping for online has had every last listed example sold, save for the one with really bad pics, despite the fact that it was among the cheapest in price, and was an earlier, more desirable model.
So it really serves to illustrate my point that taking quick, lazy, careless, poor quality pictures of anything you're trying to sell is counterproductive.
Honestly, had the seller bothered to clean, lubricate, and take multiple clear photos of the firearm, then I have no doubt that it would have sold by now like all the others did, probably even faster since it's an older model.
On a side note, I'd like to take this opportunity to point something else out in response to those who argued that back in the day folks used to sell firearms in the paper all the time without any photographs. First of all, I'm perfectly aware of this, as I was alive prior to the existence of the internet and used to browse through such listings in the local paper all the time. However, back then most sales were finalized in person where the buyer could see/examine what they were shopping for, and there's the kicker.
For example, my LGS has a website, and unfortunately the pics they take aren't very good either — not nearly as bad as some online, but not great either — they tend to be taken from a distance under the dim florescent lighting of the store, so you can't see much detail.
However, they're at least adequate, and it's of little consequence regardless because the shop is located a short distance away from me on a road which I frequently go down anyway, so stopping by to examine guns personally effectively renders their less than satisfactory pics a non-issue.
So under circumstances in which a firearm is being sold locally via an FFL that anyone can visit and see the gun for themselves, poor pics aren't as big a deal. I'm specifically complaining about online listings in which an FFL Holder is attempting to sell their firearms nationwide, yet takes poor pictures which fail to adequately reflect the overall physical condition of their wares.