Gmail isnt that smart....see for yourself

I recently discovered something very unusual about the gmail email id.
Suppose that if you have a gmail id by the name of carljohnson@gmail.com ,then it is same as carl.johnson@gmail.com and even same as c.a.r.l.j.o.h.n.s.o.n@gmail.com ,yes this is true there is ABSOLUTELY NO DIFFERENCE between these 3 ids.Ah, now i know you want to check them yourselves....go on....
The reason for this is that the gmail server does not recognise the dot(.) character and so this kind of thing occurs .
And yes one more thing, one more name for your e-mail id would be carl.johnson@googlemail.com
If u like it please post comments....