Thread:Cennobite2/@comment-25192437-20150517151309

I did some digging, and while it's usually considered improper since it tends to result in incomplete sentences, there are some circumstances where it can be used:

http://writing.msu.edu/starting-a-sentence-with-because/ http://www.grammarmudge.cityslide.com/articles/article/1026513/8909.htm http://theadvancededit.com/grammar/grammar-myths-debunked-starting-sentences-with-because/ 