Update: It was voluntarily closed down due to “threats & politics”. See a bit more at the Chronicle.
From my STS listserv, the following helpful bits of information:
“Rumors via twitter are that Cabell’s is subsuming Beall’s list.  They’ve been incorporating it into their criteria for a couple of years now.
-Gail P. Clement  | Head of Research Services  | Caltech Library
What is Cabell’s? Is it yet another subscription? Will Ulrichs do any of this? Please, pretty please, let them be doing some of this work.
and this helpful report, along with some of the reasons his list was problematic:

“According to the Support for Open Access Publishing website, Beall’s website has been shut down.

– Gillian Clinton, Principal. Clinton Research.   www.clintonresearch.ca
This is another site that seems to be getting some traction: http://thinkchecksubmit.org