Should I publish in a journal that appears on Beall’s list?
Beall's list is grounds for high suspicion, not a ban.  In the case of this particular journal, it looks like not a very good journal, but not an obvious scam.  Google Scholar finds a number of articles with moderate citations, and on first inspection they don't look like metric gaming, so it looks like it wouldn't be a black mark on one's record.  

Bottom line: probably legit, but if you've done good work isn't there somewhere better than you can publish it?