You can get very easy from here. Each of these platforms caters to a different set of audience which you need to keep in mind while devising your e-marketing plan. For instance Twitter is a microblogging site, YouTube is a video sharing site, Google+ and Facebook are social networks and so on. So Twitter which is restricted to 140 characters, is good for press or keeping your audience up-to-date. In comparison, Facebook is good for building personal relationships with customers through posts and videos. Google+ connects you to all the Google services and also has hangouts for conferencing and active communities for sharing.