Bill - Just a suggestion that might help in situations like Phil's question above. There are a couple of ways to title or caption your picture when you upload it so when it displays, the file name or caption will briefly show and can be viewed to name what the topic or item in the photo may be.
You can either fill in the "caption box" prior to selecting and uploading a file, to describe the contents, or do like I do and rename the picture file with a description or name itself before you select the file for uploading. If you use the caption box method, you need to remember to enter a new description/name for each file uploaded, otherwise they either all end up with the same description/name or only show the original picture file name without any hints about what it may be of after uploading this first pic.
[on edit by klhansen] To add to Dan's instructions about captioning.
Here is a video on how to post pics with a caption.
