Most of acquired knowledge are closely linked to our own experiences. The more vivid are these experiences, more firmer will remain this knowledge in our mind.
Nowadays, virtual environments are a powerful tool for experimenting, and make hypotheses, as a mean to acquire new knowledge and sharing it, in a dynamic and collaborative way.
Without doubt, one of the best-known collaborative virtual environments, is Second Life, where you can visit different places, change the appearance of our representation (avatar), create buildings, provide services, buy and sell online, etc. However, because it is a commercial enterprise not all of these options are free.
But there are many alternatives such as OpenCroquet, OpenCobalt, Openqwaq, OpenSim, etc. that I'll try to comment in future posts.
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