Sites with similar concepts are listed below. This site have something in common with all of it.
Wikipedia: the free encyclopedia
wikiHow: The How-to Manual That You Can Edit Wiktionary: Collaborative project for creating a free lexical database in every language, complete with meanings, etymologies, and pronunciations.
Good life project by Johnathan Frelds.
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Do it yourself and similar initiatives.
Beliefnet: Inspiration. Spirituality. Faith.
One laptop per child get to tablet.
Thousands of FREE College Courses Listed By Institute
videolectures.net;: exchang ideas & share knowladge