16. A method for determining social information of a user of a wearable computing device that is available to a friend of the user, the method comprising: detecting, by the wearable computing device, presence of the friend of the user of the wearable computing device within a predetermined proximity to the user, wherein the detecting of the presence of the friend is based on a pre-established online social networking relationship between the friend and the user; identifying, by the wearable computing device and in response to detecting the presence of the friend, social information that was (i) previously published by the user on a social networking site, wherein access to the social information published on the social networking site is restricted from general public and (ii) accessible by the friend on the social networking site; generating a summary of the identified social information for display to the user, wherein generating the summary of the identified social information comprises highlighting social information not accessed by the friend; and displaying, in response to detecting the presence of the friend, the identified social information to the user.
16. A method for determining social information of a user of a wearable computing device that is available to a friend of the user, the method comprising: detecting, by the wearable computing device, presence of the friend of the user of the wearable computing device within a predetermined proximity to the user, wherein the detecting of the presence of the friend is based on a pre-established online social networking relationship between the friend and the user; identifying, by the wearable computing device and in response to detecting the presence of the friend, social information that was (i) previously published by the user on a social networking site, wherein access to the social information published on the social networking site is restricted from general public and (ii) accessible by the friend on the social networking site; generating a summary of the identified social information for display to the user, wherein generating the summary of the identified social information comprises highlighting social information not accessed by the friend; and displaying, in response to detecting the presence of the friend, the identified social information to the user. 17. The method of claim 16 , wherein identifying the social information comprises identifying a pool of social networking sites used by the user.