双面绒是面料的一种，是将织物在生产过程中用拉毛机单纱或双纱起毛而型成的自然毛绒面，泛指两面起绒的面料，有毛或者有绒的面料。金丝绒是一种纺织品，以蚕丝和粘胶长丝为原料交织地组织为平纹，用双层织造的经起绒
I have a system where registered users can vote up/vote down comments for a picture. It\'s very similar to Stack Overflow\'s voting system.
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