In the creator economy, the default monetization playbook is well established: build an audience, then sell ads, subscriptions, or digital products. But Eric Siu has built something far less common — and arguably far more lucrative.
Instead of chasing scalable media revenue, Siu has used his podcasts and YouTube presence to fuel a services business — his marketing agency, Single Grain — that works with major brands and generates high-ticket client relationships. His flagship shows, Marketing School and Leveling Up, have collectively generated tens of millions of downloads, but their primary function isn’t media monetization. It’s customer acquisition.
“The podcast did the selling for us,” Siu said.
In a recent interview, Siu explained how he met his co-host, where he found his audience, and why he chose to monetize his content with a services business.
Let’s jump into it…
From $32K Data Entry Job to SEO Operator
Siu’s entry into marketing was less a strategic career move and more a byproduct of circumstance. Coming out of the Great Financial Crisis, he found himself stuck in a low-paying job.
“The only job I could find was a $32,000 a year salary job doing data entry,” he said.
A friend introduced him to digital marketing, and he quickly gravitated toward SEO. By his mid-20s, he had worked his way up to a director of marketing role, honing his skills inside agencies.
“SEO was kind of the bread and butter,” he said, describing his early career.
That foundation would later prove critical — not just for client work, but for building the inbound engine that sustained his agency.
A Cold Email That Sparked a Key Relationship
Around this time, Siu became an avid reader of Neil Patel’s blog, QuickSprout. Patel stood out for his transparency — regularly publishing detailed breakdowns of marketing experiments and ROI.
Siu wasn’t afraid to challenge him.
“I decided to email him. I was like, ‘Hey, it kind of sounds like you’re making this up,’” Siu recalled.
Instead of ignoring the criticism, Patel responded — and kept the conversation going. That exchange eventually led to an in-person meeting at Taco Bell and a long-term relationship that would later produce one of the most popular marketing podcasts.
“It’s never been about a transactional relationship,” Siu said.
That ethos — building relationships first, monetization second — would later mirror how his content strategy worked at scale.
The Long, Slow Grind of Building an Audience
Siu launched his first podcast, Leveling Up (originally called Growth Everywhere), in 2013. Inspired by Andrew Warner, he focused on interviewing entrepreneurs through a marketing lens — a niche that was largely underserved at the time.
But growth was painfully slow.
“After the first 12 months… all I had to show were nine downloads a day,” he said.
Even after a second year of consistent effort, the podcast only reached 30 daily downloads. It wasn’t until year three that things finally clicked, jumping to over 100,000 monthly downloads.
That trajectory underscores a core lesson Siu emphasizes:
“When people say it typically takes three-plus years to build an audience… that’s very true.”
At the same time, he was experimenting with early video distribution. Posting Skype-recorded interviews to YouTube — despite poor production quality — gave him unexpected reach during a period when the platform was still relatively under-saturated.
“YouTube was very much the wild, wild west,” he said.
Growth Hacks and Early Distribution Wins
Siu didn’t rely solely on organic growth. He also aggressively experimented with distribution hacks.
One of the most effective was gaming Product Hunt’s podcast rankings.
“We would have people from my team upvote… and every single day you would see [our podcasts] top one and two,” he said.
The tactic drove significant downloads — enough that Product Hunt eventually shut down the podcast section due to widespread gaming.
While unconventional, it highlights a broader theme in Siu’s approach: distribution is often engineered, not discovered.
Launching Marketing School — and Doubling Down on Consistency
Roughly four years into Leveling Up, Siu and Patel launched Marketing School, a shorter, more tactical podcast focused on actionable marketing insights.
Initially, episodes were tightly structured and just 5–10 minutes long. Over time, the format evolved into more conversational, news-driven discussions — a shift that enabled them to capitalize on trending topics.
“We’re reacting to the news cycle… and that gives us a chance to go viral,” Siu said.
Clips from these episodes now regularly generate millions of views across platforms.
However, one surprising insight was that the two podcasts didn’t meaningfully reinforce each other.
“Some listen to both. Some people just listen to one… no real takeaways for that one,” he said.
In other words, even closely related content brands can develop distinct audiences — a useful reminder for creators expecting cross-platform synergies.
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