ViewDo covers a ton of topic areas, and one of the nice things about the site is that videos can be downloaded to a portable media player (like an iPod or PSP) and watched on the go.

• 他们最大的特点已经反映在名字中了，那就是所有的视频长度都不超过5分钟，对于某些时间比较紧张的人来说，再适合不过了。