EasyDiscuss in EasySocial-Stream: hide/resize images of discussion post?

Hi,

Situation:

• I use EasyDiscussion as a forum (OK, as I wanted)
  
• new Discussions will get into the easySocial stream (OK, as I wanted)
  
• often, a new post of a discussion is only one new image (OK, as I wanted)
  

Problem:
The bad thing is, that the images of those new posts of discussions
are shown very large, same size as posted
and that destroys the layout of a flow the new items of the easySocial stream
and also generates much traffic to load large images
just to watch the new items.

Question:
Is there a way to hide or resize those images?
Also dirty hacks are welcome.

Thanks a lot,
Frederic Espitalier