So we do have control over the resolution of the uploaded image apart from any camera or scanner resolution.
Point is you were telling him he was wrong for using more than 72dpi, but he has to scan at more than 72dpi - if you've ever scanned anything, you'd know that. Try scanning a negative at 72dpi and you tell me what the native size is as a result. Or, if you scan at 72dpi with a target width of 1024, you tell me what kind of quality results. You have to, have to, have to scan at the highest possible scanner resolution, and that's what he was talking about.
Now, regarding this photo, at the size he uploaded at it's just got all sorts of problems.
DeltaWings: I've looked at your profile, I see that you're still young and it sounds like this is your first attempt. I hope others are not too harsh on you and keep that in mind; we all had to start somewhere and it takes time to get things right. That said, maybe you could ask for help a bit more nicely next time.
Ok, first of all, something got lost in the translation when you either scanned in or transferred this image from your camera (I don't know if this was film or digital). It's clearly been resized up at some point in the process. I don't know if you were using digital zoom on your camera (never do that; only use optical zoom), or if somehow your target scanning size got messed up (like scanning at a larger size than your chosen scanning resolution can support), or if you manually resized it up for some reason, but this is not the native resolution of this photo.
So tell us first, is this one of your digital photos or your scanned photos? If it's scanned, what settings did you use on this particular photo?
Second, the size is too big. Check the submission guidelines for submission size.
Third, there is a lot of noise. It looks like a combination of both jpeg compression noise and either digital sensor noise or film grain. If this is a digital photo, this is dependent on both the settings in the camera (make sure you use the highest quality settings) and your file save settings. If it's film, then it depends on your film type and file saving.
Don't really know what else to tell you right now; only other suggestion I could make is to look at some of the other recent photos in the database and try to match the quality of those. Older photos may not be as technically proficient; the standards for technical prociciency have gotten higher here over the years, so make sure you look at recent submissions for comparison.
I'm tired of being a wanna-be league bowler. I wanna be a league bowler!