You can view the discussion group bellow through the Google Groups interface, notice that Google has broken some functionality while switching to the new look for the groups product and you might want to go to the home page of Google Groups to revert to the old look if things don't work.
Please notice that the spam filter on Google groups is a bit over eager and might randomly reject messages of previously approved posters!
If your message doesn't appear just try again with slightly modified content within a few hours.