It’s up if you go to one of their section pages directly.
http://www.breitbart.com/big-government
If you go to the main page, you just get a login screen.
...as of right now.
Thanks...weird They are probably getting hacked
that was my esperience as well
the direct links such as :
http://www.breitbart.com/Columnists/Breitbart-News
work
access to http://www.breitbart.com brings up a login screen