I Agree. Such as Facebook. It's make me happy everytime i open it and Facebook has many adventages. Few day ago I have alert from Facebook. When 5 years ago I was posed a picture when I was a child I smile when I saw that. and Facebook make me come across old friend. Sometime Facebook show about friend how are they, what are they doing now. Last week I saw a girl look like my old friend but I'm not sure so I went to check on my Facebook. I found that it's she. And she live in Silpakorn University same