You can embed pics into threads, I try to do it all the time because I hate seeing just a clump of pics at the end of a thread.
Heres how I do it
#1) Click Manage Attachments and upload all your attachments
#2) Look at the post decoration icons (the place where you click to make text bold, italic, etc), up above. Next to where it says "Fonts" "Sizes" There is a smily face icon, and a Paperclip or + Icon. Click on the paperclip/+ and you can insert an attachment into the body of the text anywhere you want!