Contextual advertising — refers to ads that people see based on what they're searching for or reading. The main type is search advertising: a person enters a query, and relevant ads labeled «Ad» appear above the search results.
Types of contextual advertising
Contextual ads are displayed in two places:
-
in search — ads that appear in search results based on a user's query;
-
in advertising networks — ads displayed on search engines' partner websites. They're selected based on the page's topic or the user's interests, such as what they recently searched for.
How it works
Advertisers select keywords — search queries that should trigger their ads. They also choose negative keywords — terms that should prevent their ads from appearing. For example, a furniture store that doesn't offer assembly services adds «assembly» as a negative keyword to avoid paying for clicks from people looking for furniture assemblers.
If several companies advertise for the same search query, an auction determines their ad positions based on the bid and how relevant the ad is to the query. Contextual advertising is primarily paid for on a per-click basis.
Contextual advertising is often confused with targeted advertising. Contextual advertising reaches people when they're actively searching for something. Targeted advertising shows ads based on user characteristics: age, interests and behavior, even when they're not currently searching for anything.
Contextual advertising in traffic arbitrage
The main advantage of contextual advertising — is a high-intent audience: people are already searching for a product or service, so there's no need to persuade them. That's why search traffic is highly valued by both affiliate networks and advertisers.
However, contextual advertising has strict rules, and platforms block ads that don't comply with them. White-hat offers are the easiest to promote here. Affiliate marketers also run gray-hat offers, but they use cloaking and trusted agency accounts, and the risk of getting banned is high: serious violations can lead to permanent account suspension. Clicks in popular niches are expensive, and setting up an ad account is more complicated than with many other traffic sources.
A separate issue — is branded search queries, meaning searches that include the advertiser's company name. This traffic is inexpensive and has high purchase intent, but many offers prohibit advertising on branded keywords: advertisers already buy this traffic themselves and don't want to pay for customers who were searching for them anyway. That's why you should check the offer's terms before launching to see whether contextual advertising and brand bidding are allowed.
Another risk of contextual advertising — is click fraud: competitors or bots click on ads to drain someone else's advertising budget. Monitor your click statistics: platforms report invalid clicks, and suspicious traffic can be filtered out.
Important: don't launch contextual advertising without negative keywords. Without them, your ads will appear for irrelevant search queries where people are looking for something completely different from your product, and your budget will be wasted on clicks that don't generate a single lead.
