that start a movement. here's the top ten trending hashtags for 2015. number ten, guacamole with peas? when "the new york times" tweeted a recipe that included peas, the internet was skeptical. people jumped on twitter, not exactly showing the love. even the president of the united states jumped in. but i have to tell you, i did a taste test and it was kind of delicious. that's really good. >> yeah? >> reporter: number nine, a little girl's body washed ashore in the boston harbor, so the massachusetts state police jumped on social media, trying to get help in identifying this little baby doe. more than 50 million people viewed this composite image of this little girl. after 85 days, she was identified as bella bond. >> this child whose very name means beauty was murdered. >> her mother was charged as an accessory to murder. her boyfriend, charged with murder. number eight, 14-year-old ahmed