The latest issue of MovieMaker Magazine (2014 Complete Guide to Making Movies) has a nice section on all the VOD services with Pros, Cons, and "best use of" for your film. These articles on not yet available online. Hit up your local Barnes & Noble. But to summarize, none of them offer marketing other than being available via search or on their front page for a period of time. Getting the consumer to click "buy" is the art of sales and marketing.
Michael
Michael