As Julia Turner noted in her New York Times Magazine essay, the hashtag has, overtime, evolved into a "form that allows for humor, darkness, wordplay and, yes, even poetry." No longer is it just used for categorizing tweets by topic. Now, the ever-popular pound sign has become an efficient way to chronicle our daily sentimentsthe good, the bad, and, more often than not, the funny. Here, we present the 15 Most Memorable #Hashtags of 2012.