I like to browse the steel guitar manufacturers' web sites, but some of them have some really humungous graphics on their sites, and rather than wait for maybe a minute to see a picture of their latest model I'll often times just go somewhere else. Studies have shown that 40% of users will abandon a website that takes more than three seconds to load.
Huge graphics = bad web design. Graphics for the web should be well under 100Kb, like maybe 50Kb, but I've seen steel guitar pictures that are over 3Mb, which is roughly 3,000Kb, like 60 times too big for the web. Pictures like this are apparently right out of the camera, with no compression for the web. Any web developer, me, for instance, would compress images down to a size that would still look good and load quickly enough so the visitor wouldn't give up and go to another site. Another downside of huge graphics is that it uses up a lot of bandwidth on your server, and if you exceed your quota you might get charged extra for it at the end of the month, or your site could even go offline until you up your quota.
Yeah, money's tight and a competent webmaster, or even a graphic designer who knows something about web graphics, might not always be in the budget, but a business website really should have graphics that are a reasonable size, which not only helps give the site a professional appearance, but is also a courtesy to visitors, since they don't really want a frustrating experience when they visit your site. If there's pictures of, say, 20 steel guitars that haven't been compressed properly on one web page it's gonna take a while.
And if a steel guitar is just so gorgeous that it need to be displayed at full size, print quality, then that image should be linked from a smaller image or a thumbnail, maybe even with a warning that you can go get a cup of coffee while it's downloading if you have a slow connection.
Below are 3 versions of the same picture at different compression levels. They're all the same size, 500 pixels by 375 pixels, yet they download at different speeds according to how much they've been compressed, and the difference in quality is minimal. The original photo right out of the camera is 3MB, which would take 375 seconds to download at 56.6 kbps (kilobits per second). If you want to see it you can go here. I have it on my own server, where I do web development, so we don't waste any SGF bandwidth on this demonstration.

Maximum quality, minimal compression
153kb, 29 sec to download at 56.6 kbps

High quality, more compression
40kb, 8 sec to download at 56.6 kbps

Medium quality, even more compression
20kb, 5 sec to download at 56.6 kbps


