Talking of iconic images how do you get a grumpy face or thumbs up icon on the left hand side of a thread?
You have to be a regular clicker of the 'Donate' button... 

Don't listen to the old skinflint ........
Under where you put Subject you click on "Message Icon" and make a selection from the drop down list that will appear.
Meanwhile all donations to the continuing expense in running the site are greatly appreciated but are purely voluntary.