Building in public — day 4: launched a blog, wrote two honest articles about why agencies stay broke

Another update from the AgencyOps build.

Today I launched a blog at introdoor.com/blogs — focused entirely on agency pricing, profitability, and operations. Not generic marketing advice. Not SEO tactics. The business mechanics behind running an agency that actually makes money.

Two articles are live:

1. How Managing SEO Retainers Almost Taught Me the Wrong Lesson About Growth

The story of running 14 SEO clients, hitting every growth milestone, and ending the year with a 19% net profit margin. What I got wrong, where the margin was silently disappearing, and how I fixed it.

2. How Running Paid Ads for Clients Almost Broke My Agency

PPC agencies are especially exposed to a specific profitability trap — staying busy while the numbers quietly don't work. This one covers that gap honestly.

Both are 13-minute reads. No fluff, no generic advice, no listicles dressed up as insight.

Why I'm writing this kind of content

The SEO and PPC industry produces enormous amounts of content about tactics. Almost none of it covers the business mechanics of running an agency sustainably — real pricing models, per-client profitability, cost structures that don't collapse under growth.

That's the gap I'm writing into.

The free calculators at introdoor.com/tools put numbers behind the thinking. The blog explains the thinking itself.

AgencyOps is the system that tracks it all once you're operational.

Three layers. Same problem. Different stages of the same agency owner's journey.

Revenue: still $0. Content shipped anyway.

If you run or have run a service agency — does the 19% margin story resonate? Genuinely curious how common this is.