Twitter is without a doubt the best way to share and discover what is happening right now.

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wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-s...

YouTube is a place to discover, watch, upload and share videos.

ENERGY STAR is a government-backed program helping businesses and individuals protect the environment through superior energy efficiency.

IES (Illuminating Engineering Society of North America) - The Lighting Authority - Publisher of lighting design and illumination standards and Nationa...

Alexa provides information about websites including Top Sites, Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information a...

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the worl...

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Colegio Universitari IES 21 on academia.edu