[NTLUG:Discuss] define heavy web traffic

[m m]

All:

one of my co-worker told me the in the peak season, we will have 40,000-50,000 hit a month on our web server.
I said it is ok for linux box (for one single box). 
Am I exaggerated?
How does people define  the light, medium, heavy for a website?
Thanks. 
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