Once it was suggested to make a such a site in Tamil.
Here are some interesting sites of interest:
General : http://www.howstuffworks.com/
Hydro Power: http://ga.water.usgs.gov/edu/hyhowworks.html
GPS system: http://www.go.ednet.ns.ca/~larry/gps/gps_talk.html
Many latest tech here: http://www.time4.com/time4/microsites/popsci/howitworks/index.html
A sim card is needed to operate an M-Pesa account. This has a money
transfer menu that allows account funds to be managed.
"You just deposit cash to one of M-Pesa shop and we issue you with e-
value cash voucher on your M-pesa account" "The vouchers can be cashed
at any appointed agent across the country."
http://www.safaricom.co.ke/2005/default.asp
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CAPitalZ
http://adadaa.com/