Yes You Are re-post the same content on different social media networks. Users would infrequently follow the same brand on a number of networks. By re-posting the same content, you reach more people. Besides, it leads to network integration: users might find your content on Twitter and later post it on their Reedit/Tumbler/etc page. In Addition, you can post the same content on the same network many times, just in case, your people or followers haven’t seen it the first time. A validity of a Tweet, for example, is only about 5 minutes. So only by posting it 3 or 4 times (on different days and different hours), you can be sure that most of your audience has seen it.