I just tried posting a photo here off my iPad and it worked fine, Jim. In fact it was easier than using my PC. The only problem is images taken with the iPad itself, especially from poorly lit subjects, are not very highly resolved.
The reason you may not successfully post here is that it won't work if there isn't already some text in the message field. Many people don't realize that. Plus, you must use the "More Post Options" in Quick Reply, or you can't add pix. Otherwise just use the field associated with the "newreply" button.
Add text in the message field, then click Choose File, then either "Choose Existing" or "Take Photo or Video".
From "Choose Existing" click the album and then the photo you want to post, then click "Attach (and add more)".
Or from "Take Photo or Video" take an iPad photo and hit "use" at the bottom; then click "Attach (and add more)".
The iPad-taken photos probably have low enough resolution as to not exceed the 1MB size limit for posting here. Other camera produced images need to be resized smaller as per Steve's post here, or the system won't accept them. The simplest way I use regularly, on a PC anyway, is to open a photo in the Paint program. Choose the "Image" menu tab and then "Stretch/Skew", change both size parameters from 100 down to about 25-30 percent, then save the result. That image should be sized well within the website's guidelines.
Joel