Number-speak for HELLO.

4 = H
3 = E
1 = L
1 = L
0 = O

Of course only used on the net, when typing is required and people think up weird ways of presenting or spelling things.
MSN

Person1: Hey

Person2: 43110

Person1: wtf?

Person2: It means HELLO, can't you see it? DUH.
by Sweetpea................ March 11, 2006
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