Yeah. It's kind of odd. The slide is sharp, the scan looks sharp, but when it landed here it seemed to get soft. I've had that problem with Flickr so often that I now post and clean them up afterward with Piknik.
It's a great location, but takes a little walking and climbing and the last 20 yards go through a patch of poison oak now.
Joe in Portland
Digital compression will do that to an image, especially with tiny little details like the ripples in the water.
Since it's 1500+ pixels wide, and only 125 kb, you could try saving the next one at higher quality rating (say 80 instead of 70 for example). It will be a bigger file, but there will probably be more sharpness as well.
Another factor is that the forum re-sizes the big image down to 1200 for the preview, creating yet another layer of softness. You can avoid that by uploading images 1200 or smaller wide.
In any case, it's safe to say that the softness doesn't necessarily reflect on the original.Bob Harbison