How it works

A tank of ads that are always for sale

This is a Harberger tax (Posner & Weyl, Radical Markets) applied to ad space. Three rules, and one exception you can buy — spelled out below.

You set the price.

Your bubble's size is the price you declare. Minimum $5. Change it any time there's no buyout pending.

You pay tax on it.

1% of your price per week (min $0.10/day), settled once a day from your credits. We bill whole cents and carry the fraction to the next settlement, so a week costs exactly 1% and never more. Run out and your bubble pops, with no warning first. Price too high to block buyers? You bleed. The one exception is an eternal bubble — see below.

Anyone can buy you out.

Any signed-in person can pay your price. You then get 24 hours to defend: raise your price to at least the offer and pay the buyer a 10% fee. Don't, and the bubble is theirs — you get the price minus a 10% platform rake, as credits. We don't email you when that clock starts. Price too low? You get bubbled.

What we send you: the sign-in link, and nothing else. No mail goes out when someone buys you out, when the daily tax is settled, or when a bubble pops for running out of credits. The tank shows a buyout on the bubble itself, and your tank page lists every bubble you hold, the clock on any of them, and how many days your credits still cover. Checking is on you.

Taking it down: you can end your own placement from the bubble's panel in the tank whenever no buyout is pending — it pops immediately, tax you have already paid is not refunded, an eternal premium is forfeited, and the space goes back to the tank.

The exception: eternal bubbles

You can buy a bubble out of rule 2 once, up front. Pay 20 weeks of tax — 20% of your price where the 1% weekly rate applies, or $14.00 where the $0.10-a-day minimum does, which is why eternity needs a price of at least $14.00 — and that bubble never pays tax again. It cannot pop for running out of credits.

Rules 1 and 3 still apply in full: you set the price, and anyone can still buy the bubble at exactly that price.
The exemption belongs to the bubble, not to you. If someone buys it, they inherit it — which is why an eternal bubble is a better buyout target, not a safer one.
Raising the price later costs eternity at the new price less whatever you have already paid for eternity on that bubble, so eternity can never be bought cheap and then inflated.
It is a one-time purchase and, like every credit spend here, non-refundable. The terms carry the contract wording.

Buy it when you mint (the checkbox on the new-bubble form) or any time afterwards from your own bubble's panel in the tank.

Money

Everything runs on prepaid credits bought with a card through Polar, our merchant of record. 1 credit = $1.
Credits are non-refundable and cannot be withdrawn as cash — the full rule is in the terms. Sale proceeds and defense fees arrive as credits you can spend on more bubbles.
Tax, the buyout rake and the one-time eternal premium are the platform's revenue. That's the whole business model, in the open.
Playing pays, a little: raising your personal best in a skill game converts the rise to credits at grinder rates, capped at $0.50 a day per account. A round that does not beat your best pays nothing, and whatever a day's cap cuts off is forfeited — it does not carry over to the next day. Games of chance pay points only, never credits.

Content

Product sites, personal sites and social profiles. No adult content, scams, malware, hate, or anything illegal where we operate (Poland/EU).
We can pop any bubble that breaks this. Credits already spent on tax are not refunded; locked buyout funds are.
Outbound clicks are counted server-side with bot filtering and per-visitor de-duplication. Counts are indicative, not an audit.

How many people will see it

This is a new tank: it went live on 22 August 2026. We count outbound clicks on the server and show that number on every bubble — it is the only audience figure we have. We do not measure page views or impressions, so we do not quote any. Open a bubble and you can see exactly what its slot has earned.

Who

Built by KOD.AI in Warsaw. Questions: info@kodai.com.pl. The contract is in the terms; what we store is in the privacy policy.

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