@billstevenson , others
To post that photo, I did this:
1. open the ad. (any web page)
2. select the photo you want (ANY photo on the web)
3. right click, 'copy image address' (that's the image's URL)
go back here to your post window
4. click on the IMAGE icon, top bar, 6th from the left (box with mountain)
pop-up window opens, cursor is blinking in the URL box
5. paste the image address (you copied) in the URL box
6. size the image: width box: enter 600 (that's the number of pixels wide)
(aspect ratio is automatically retained, no need to specify the height)
7. bottom right, click OK
8. hit return, to get the blinking cursor below the pasted image so you can continue to write
9. post your response.
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Hint: Lately, the site sometimes fails, thus before 'post your response' I select my entire response and copy it into my clipboard, so it is saved there IF something goes wrong,
then 'post your response', if it goes, great, if it fails, you heve everything in your computer's clipboard ready to simply paste in another attempt.