If you're pasting in HTML code for a badge make sure you do in in HTML screen mode not visual. Sometimes I've resorted to just copying the picture and adding a link to that when gremlins take over!
There are sites where you can make badges and they generate the code for you but would have to go off and do some hunting to find you the links.
Hope this helps, this is about as far as my IT skills go and apologies if this is embarrassingly way off the mark!