There is another function i like it too. From your

來源: 於 2012-02-04 21:22:42 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

smart phone, for example Iphone, when you're in somewhere, you may choose"check in', could be a restaurant, bar, movie or hospital etc.Then all your friens will know where are you and what r u doing. If they're happened to be close to you, then you guys can have a meetup.