A new window will appear and you can choose the file on the disk that you wish to upload and the service you want to post it to. 멘션, 받은 편지함 또는 보낸 편지함을 보려면 화면 왼쪽에 있는 아이콘을 클릭하면 됩니다. The strength of Twitter is obviously by the use of hash tags.