Sorry RSL and others about that file size. I've been using Snagit to grab screen shots for uploading here and wrongly assumed that the png file sizes weren't dependent upon the image size showing on my screen. Here's a 451 KB file size of another image without the people. Hope it loads faster.
If not I'll go back to jpg within Snagit as that compresses further.
There was a thread a while ago which involved discussion of the quality of screenshots. As I recall, it was demonstrated beyond any reasonable doubt that they really aren't very good.1 Far, far better quality is gained by exporting a jpeg from whatever software you're using for preparation and posting that. You can control file size pretty easily as well.
Jeremy
1For the benefit of those who don't immediately appreciate English understatement, that's an example.