If you look at my sidebar at Power and Control you will see that the logo for Regime Change Iran has been banned. The message reads in part:
This page/domain banned b/c porn, warez, or topsite. If you own this site and feel the ban is in error visit imageshack.us go to "Contact Image Shack" and refer to the contents of the url bar.
Regime Change Iran is still functioning. Visit them for their latest updates.