Ad blockers are simple to install and immediately satisfying to use, but it's worth understanding the actual tradeoff involved, not just the browsing experience improvement.
Blocking ads removes a site's primary revenue source
Most free websites and content — news sites, blogs, video platforms — are funded primarily through advertising revenue, meaning a visitor viewing or clicking ads is, in a real sense, how that free content gets paid for. Blocking ads removes that revenue for the specific sites visited, without necessarily replacing it with anything — a real, direct tradeoff between a better browsing experience for the visitor and reduced income for whoever created the content. This isn't meant to guilt anyone out of using an ad blocker, but understanding the actual economic relationship is worth having clearly in mind, rather than treating ad blocking as a purely one-sided improvement with no consequence.
Some sites detect and respond to ad blockers
Many sites now detect when an ad blocker is active and respond by showing a message asking it to be disabled, limiting content access, or in some cases blocking access entirely until the ad blocker is turned off for that site. This is a direct response to the revenue tradeoff described above — worth expecting as a normal part of using an ad blocker regularly, not a malfunction or an unusually aggressive site.
Allowlisting specific sites is a genuine middle ground
Most ad blockers let you allowlist specific sites, disabling blocking just for them while keeping it active everywhere else — a reasonable way to support sites you value and want to see continue operating, particularly smaller, independent creators or publications more dependent on ad revenue than a large, diversified media company. This middle-ground approach gets less attention than the all-or-nothing framing "block everything" or "block nothing" usually implies, but it's a real, easy-to-use option worth considering for specific sites worth actively supporting.
Ad blockers also block some tracking, not just visible ads
Many ad blockers also block tracking scripts bundled with ad networks, which is a genuine privacy benefit distinct from simply removing visual ad clutter — some of what an ad blocker prevents is a site or advertiser building a profile of browsing behavior across different sites, not just displaying an ad on the current page. This tracking-blocking function is a real, separate benefit from the visual decluttering most people notice first.
The one thing people forget
Check whether a specific ad blocker itself has a legitimate, transparent business model, since some ad blockers have historically taken payment from certain advertisers to allow specific "acceptable ads" through by default — worth knowing which ads are actually being blocked versus quietly allowed through a paid exception, rather than assuming every ad blocker blocks every ad equally and without exception.