Suppose I want to say
After ELL was launched it took a bite in the traffic of ELU's traffic.
Here by took a bite I want to convey that ELL has snatched some of the traffic of ELU. So what is the common ideal expression to convey the same meaning?
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Sign up to join this communityTo say that it took away some of EL&U's traffic, took a bite could be appropriate. However, it would be used with out of, not in.
After ELL was launched, it took a bite out of EL&U's traffic.
Additional reference: http://idioms.thefreedictionary.com/take+a+bite+out+of
You could also say
After ELL was launched, it diverted some of EL&U's traffic.
After ELL was launched, it stole some of EL&U's traffic.