These sites really encourage users to share articles of other writers. Klout says that it will help your credibility in your niche and help grow your audience. Buffer, well I'm not sure how buffer does it, but they both do the same thing. Provide a simple means for *hopefully* our well-written articles to be submitted to their followers on various platforms. Do you know of any other sites like Klout and Buffer that does this?
After waking up due to fainting after I saw the price, I looked around and didn't see anything about submitting one another's articles, like is done on Buffer and Klout.