Editing Ad blocking (section)

===By external parties and internet providers===
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Internet providers, especially mobile operators, frequently offer proxies designed to reduce network traffic. Even when not targeted specifically at ad filtering, these proxy-based arrangements will block many types of advertisements that are too large or bandwidth-consuming, or that are otherwise deemed unsuited for the specific internet connection or target device. Many internet operators block some form of advertisements while at the same time injecting their own ads promoting their services and specials.