how do you contact your friend??msn or QQ ??even envelope transfer??

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today,when i saw tv play,i saw a man writting a letter for his love girl.then,he gave the letter to postal to transfer his girlfriend,now ,with the internet development,most of people all use email and qq and mobil phone to contact each other.but have you ever take letter by yourself??i cherish the memory of writting letter,even now ,it receives letter need long time,but i still want to write letter?do you remember stamps??how long do you receive the last wirtting letter??