How much is your Twitter profile worth?

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Diigo is a powerful research tool and a knowledge-sharing community

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

Easily find more sites like those you like. Similar Sites helps you find related sites and alternatives based on community recommendations and compute...

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

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with fr...