true. normally the kinds of ads run are in line with the theme and audience of the media. example, fox news is owned by a very conservative person so their ads will be heavy on conservative issues. a womans magazine generally won't run ads targeted at men, like get a testicular cancer screen.
so what that means in terms of social responsibility is that media (magazine, newspaper, blog, whatever) should in all good conscience only put out those ads that are true. the point of these medias is to influence people, fox news influences you to a conservative stand point and the womans magazine influences you on woman issues. it's not purely entertainment. so given that bent towards influencing people, it is only ethical to be as honest as possible.
It is true that the types of ads a newspaper and TV network accept have social responsibility issues. About every house has a TV set or just about anybody has access to the newspaper. This is to mean that the whole world is watching and reading and if you are to present anything to the audience, it has to be something that will shape up the young mind. The media has the power to shape up the minds of the society especially the young minds or corrupt them with their types of adverts.