I'm going to post the instructions here since it is the "photography" board, but please refer anyone on the other boards to this if it will help...
A couple of people have asked me why posts of their pictures show up as thumbnails while pictures posted by others show up fullscreen. You have the option of choosing how you want your picture displayed when you post it. Below are the instructions:
1) Start your post.
2) Click the image icon (little screen) above the text box.
3) When "Insert Image" popup box appears, click "From URL" and insert URL address in the URL block.
a)Leave the box "Retrieve remote file and reference locally" ticked if you want your picture to present as a thumbnail.
b)UNTICK box "Retrieve remote file and reference locally" if you want your picture to present full-scale.