<A HREF="http://www.fysik.su.se/~edsjo/darksusy/"> <IMG SRC="http://www.fysik.su.se/~edsjo/darksusy/logos/DarkSUSY2-100.jpg"> </A>and you will get a nice little logo with a link to this page. If you want a bigger logo, just change the '100' above to '200', '300' or '400'.
Below you will find the logo in both jpeg and eps versions available for download.