I'm well aware this is most likely going for an instant shoot-down.
Currently we can only get the four line signature.
It would be nice to allow small HTML imaging.
For example I'd like to include my StackOverflow flair :)
<a href="http://stackoverflow.com/users/1220965/mike"> <img src="http://stackoverflow.com/users/flair/1220965.png" width="208" height="58" alt="profile for Mike at Stack Overflow, Q&A for professional and enthusiast programmers" title="profile for Mike at Stack Overflow, Q&A for professional and enthusiast programmers"> </a>
What are the for/against's for such implementation on the site? Assuming database related or the content that the less mature individuals would put in the signatures.