Direct answer
Concepts and operation around IP addresses are useful for privacy when you understand what parts of your online activity can be linked to your IP, and when you change the routing path in a way that reduces direct correlation. Their limits are equally important: an IP is only one signal, and no common privacy tool guarantees anonymity, safety, or universal access. Effectiveness varies with the service you use, your device, your network, and even the time and configuration of connections.
What it means in plain terms
An IP address is a network identifier used to route traffic across the internet. Many platforms and ad or analytics systems can observe network-level details (including IPs) along with higher-level signals like accounts, cookies, device identifiers, and behavioral patterns. “Privacy” in this context usually means lowering the chance that outside parties can reliably link your activity across sessions.
How it works (a simple model)
When your traffic enters the internet, routing determines what IP address is visible to the websites and services you contact. Changing the path—so the service sees a different IP than your home network—can reduce some IP-based linking. However, services can still combine other signals (logins, browser state, and device fingerprinting) to identify you.
When it’s useful for entertainment use cases
For streaming, live media, and online games, these concepts help you reason about why content availability or latency can change when your network path changes. For responsible peer-to-peer usage, it helps you understand that reducing IP exposure alone is not the same as avoiding all identity signals. In practice, the “usefulness” is highest when you want to reduce direct, network-level correlation while keeping expectations realistic about what the service still can infer.
Key limitations and exceptions
First, privacy improvements are not the same as complete anonymity or guaranteed safety. Second, performance and availability can vary by device, location, provider, and network conditions. Third, some services may detect or constrain certain traffic patterns regardless of routing changes. Finally, any current, product-specific, legal, or empirical claims would need up-to-date verification.