Today on Word of Mouth, the Boston Marathon bombings happened a year ago this month, but questions about Tamerlan Tsarnaev’s possible involvement in a triple homicide remain. Investigative reporter Susan Zalkind discusses the complicated case, and whether police missed their chance to apprehend Tsarnaev long before the marathon bombs. Plus, between online hacking, stored search histories, social media settings, and malware,protecting one’s privacy has become more important, and more complicated than ever. So, how much is our anonymity worth? We'll ask And finally, there are over 700 different Emojis out there, and plenty of interest groups asking for more. Why, for example, is there no hot dog Emoji? Turns out, the answer is surprisingly complicated.