We all know how easy it is to waste an inordinate amount of the time on the Internet, not doing much of anything productive. On the flip side, there's a lot of interesting, useful and educational content that you can take advantage of. Rather than waste your time on social networks or online games, you could put some of your online time to good use by watching documentaries. There are a lot of free and entirely legal sites.
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Source : MakeUseOf