Is it possible to do HDR in the GIMP? I found
this tutorial but I've been told it's actually DRI and not a true HDR. I'm going to try my hand at HDR pretty soon so I was wondering if the above tutorial is a good one to follow for GIMP?
It seems like most people use Photomatix or Photoshop, has anyone here tried using GIMP or a freeware (hopefully Linux compatible

) program?