| 摘要 |
<p>In one embodiment, a method includes determining a geo-location of a first user; and identifying a second user that the geo-location of the first user is of interest to. The second user is identified based at least in part on a relationship between the first and second users. The method also includes sending to a mobile client computing device associated with the second user a notification associated with the geo-location of the first user.</p> |
