With a pair of recent high-profile Twitter trends, the effectiveness of hashtag activism is once again being debated. But this is not a new discussion - it goes back nearly to the advent of Twitter. While many believe there's little effect of such campaigns, such trends can make their way to the real world.
This infographic from infographicworld looks at how a well-executed hashtag campaign can effect change and highlights some of the most prominent hashtag campaigns over the past several years.