Wikipedia is one of the most informative websites that almost everyone use. The websites provides you the information detailed in every aspects what you search for. One of the best thing about wikipedia.org is that they regularly updates there datas that they provide with change in time.
If you have any information about anything on this world you can search for it and you can get a detailed report on that.
I started using wikipedia from 9th standard till now there is no other websites which can replace it.
As I suggested it is best in the bussiness!