I view the Creek postings, and post occasionally. Several times I have read comments that there are problems posting photo's if you are using a Mac.
A few days ago someone asked for photo's of Hall Trees, so I tried to upload an old photo with Mac and Safari. I selected and composed the photo in iPhoto, and attached it to my post. Very simple. My hat is off to whoever set up the SMC system.
But there are probably other Mac users out there who were put off by the problem comments, and they need to be encouraged to post photo's.