OperatorBook

Issue 72 · August 2026

Featured storyFounder narrative

The month a card-testing attack hit my signup form at $35K MRR: a fraud diary (2026)

In 2026, the endpoint you optimize for growth is the same one fraudsters optimize for abuse. A composite founder diary about the morning a card-testing bot turned a frictionless signup form at $35K MRR into a stolen-card validation service, and the 48-hour scramble to shut it down.

$35K MRRFounder narrative
By Anya Petrova7 min read
Read the story
A solo software founder seen from behind at a minimal desk late at night, laptop screen showing a red spiking line chart, warm editorial magazine style

In this issue

In-depth founder interviews, MRR journeys and post-mortems, with the real numbers.

A solo software founder alone at a minimal desk late at night, laptop casting a faint red and amber alert glow, editorial magazine style
Founder narrative

The month I lost a day of customer data at $40K MRR: a data-loss diary (2026)

In 2026, the fastest way to lose your biggest customer is a backup you never tested. A composite founder diary about the night a botched production migration erased roughly 22 hours of customer data at $40K MRR, when the newer backup had been failing silently for months and the freshest clean copy was almost a day old. It covers what was lost, the email that had to go out, the agency that churned, and the restore-drill and point-in-time-recovery changes that cut the recovery point objective from about a day to five minutes.

$40K MRRFounder narrative
Anya Petrova8 min
Editorial illustration of a tall bar stepping down into short bars beside a small unchanged web page, representing Craigslist revenue falling from its peak.
MRR journey

Craigslist Revenue: The $1 Billion Number That Fell to $302 Million (2026)

Craigslist has never disclosed its finances, so every revenue figure is an estimate. The famous $694M stat is a frozen 2018 peak; AIM Group data shows it has fallen to about $302M by 2024. Here is the sourced ledger and the operator lesson.

$1 MRRMRR journey
Joaquin del Rio9 min
A solo software founder at a minimal desk looking with quiet tension at a laptop glowing warning-amber, editorial magazine style
Founder narrative

The month my biggest integration partner 10x'd its API price at $46K MRR: a founder diary (2026)

In 2026, one four-sentence email can undo a year of growth. A composite founder diary about the month a core integration partner raised its API price roughly 10x and gutted its free tier overnight at $46K MRR, echoing the real 2023 Reddit and Twitter/X API shocks: the triage, the customer email, and the re-architecture that cut our single-vendor dependency.

$46K MRRFounder narrative
Anya Petrova7 min
A minimalist flat editorial illustration in sand and terracotta of a single coin dropping once into a jar, with a long line of small repeating tick marks fading into the distance, suggesting a one-time payment turning into a permanent recurring cost.
Founder narrative

The month my AppSumo lifetime deal caught up with me at $42K MRR: a founder diary (2026)

At $42K MRR I finally added up what an AppSumo lifetime deal I ran years earlier was really costing me: about 1,150 active lifetime accounts paying $0 a month while eating support and server costs. A 2026 founder diary on the long tail of a lifetime deal, and how I cleaned it up.

$42K MRRFounder narrative
Anya Petrova9 min
By the numbers
72
Stories published
$2450.6M
MRR represented
5
Editorial beats

One founder story per issue, with the spreadsheet attached.

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