People with strong ties likely already share similar views, so such views are less likely to surprise when they are expressed on social media. However, weaker ties may be far flung and composed of people with varying political and social ties. Also, weak ties may create bridges to other clusters of people in a way strong ties do not. For example, your siblings already know one another, and news travels among them in many ways. However, a workplace acquaintance—someone with whom you have a weak tie—who sees a piece of political news from you on Facebook may share it with her social network, her
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