Recently, the OWL received an inquiry regarding the difference between "subordinating conjunctions" and "dependent markers" and whether one is favored over another. For a little context, the OWL favors "dependent marker word" over "subordinating conjunction." Here is my response to the inquiry. Please feel free to comment, criticize, or add.
There really is no reason to favor one name for this class of words over another. I think the general trend is toward"dependent markers" just for the sake of clarity. "Dependent markers" create dependent clauses, just as independent markers lead to independent clauses. Though probably more technically correct, calling these two classes of words"subordinating conjunctions" and "conjunctive adverbs" (respectively) does not express their function in a sentence as concretely. Though I can't pinpoint the source of the terms "independent and dependent markers," I imagine they were implemented as a teaching tool and have since caught on.