Many people have probably had this thought at least once:
“Why am I seeing this ad?”
Of course, by now we all know the basics.
Ads often appear based on things we’re interested in.
Sometimes they’re related to articles we’re reading or content we’re viewing.
But every now and then, something completely random shows up.
So we ignore it and click “Close.”
Sometimes an ad makes us pause for a second —
“What is this?”
Still, we usually close it anyway.
Because we know it’s an ad.
Then one day, a different kind of curiosity kicks in.
If I’m seeing this ad, it means the advertiser paid money to show it.
And if they paid money, it’s because they want people to know about their product or service.

So… what is it?
When your browser is set to Korean, you naturally see ads related to Korea.
But what happens if your browser language is English?
Or if you use a VPN — a service that lets you change your IP address to another country?
What kinds of ads appear then?
What kinds of services exist in the world?
What kinds of clever, strange, or unexpected products are being advertised?
That curiosity is what started all of this.
That’s why whythisad.com exists.