When reading blogs, especially of the pop culture/celebrity set, I've noticed question marks being used in the middle of sentences. The example below is from Crazy Days and Nights.
This B list mostly movie actor knew his C- list celebrity/reality star? was married
This B list mostly movie actor knew his C- list celebrity/reality star? was married
when they started hooking up well over a year ago.
Don't believe the time lines being sent out by publicists
or vague statements about friendship. It was full on cheating.
http://www.crazydaysandnights.net/2014/07/blind-items-revealed_6048.html
In the example above, a question mark is placed after "C-list celebrity/reality star?" in order to question whether she could in fact be considered that. However, the author places that in the middle of a sentence and then continues with "was married." It is my sense that this is done to save space and time. Generally, the way to question someone's status would be to say something like "the arguably C- list celebrity/reality star."
According to Grammar.CCC.Comment.Edu, question marks should be used "at the end of a direct question." http://grammar.ccc.commnet.edu/grammar/marks/question.htm
The other grammar point is the use of the slash to say that someone is one thing or another. In the example above, the author said that a person was a "C-list celebrity/reality star." In this case I think it means that the person could be called a celebrity or a reality star. I guess by celebrity than mean a celebrity for something other than reality TV.
According to Grammar.CCC.Comment.Edu, this use of the "slash" or "virgule" [ / ] is not considered grammatically incorrect but rather is used to indicate a choice between the words it separates. In my view, this is another time saving technique but would not be appreciated in professional writing.
