I signed in Klout with my twitter account. The account is my name, Peng Ren. From the topic about “learn more about Klout”, it says that “Klout digs deep into social media to see how people influence each other, and to help everyone be rewarded for being themselves.” so people can add topics they like on social media. In addition to the account of twitter, I linked my LinkedIn account to Klout. My current score is 10.