What does real internet business success look like outside the internet marketing niche? In this episode, Mark interviews Brian Kaldenberg, a serial entrepreneur who built his first profitable online business from a college dorm room and went on to launch ProofreadingPal.com. Brian's story is packed with lessons about finding opportunities, competing against established players, and building a real service business online.
What You'll Learn in This Episode
- How Brian built a $200,000-per-year business selling video game roster files from his dorm room
- Why competition in a market is validation, not a reason to give up
- How Brian anticipated the decline of his first business and pivoted to proofreading
- The specific differentiation strategies that made ProofreadingPal successful
- Why personal interest often drives the most successful online businesses
Episode Summary
Mark recorded this episode from Hiji, Japan, a beautiful coastal city he was visiting for his day job. The interview with Brian was recorded earlier in Dallas.
Brian Kaldenberg started GameRosters.com in 2004 while still at Iowa State University. He noticed that players of NCAA Football on PlayStation wanted real player names in the game. An existing site offered the files for free on a donation basis. Brian registered GameRosters.com, built a better product, and through search advertising and SEO grew it to over $200,000 per year in sales.
Several elements of Brian's story stand out. His first business was based on something he genuinely cared about: a video game he played constantly. Competition already existed, but Brian saw that as validation rather than a barrier. And when he could see that GameRosters had plateaued due to its seasonal nature, he did not wait for the decline. He pivoted to ProofreadingPal, an online proofreading and editing service.
ProofreadingPal differentiated through a two-proofreader model where every document gets reviewed by two sets of eyes, turnaround times as fast as 90 minutes, 24/7 availability, and all native English-speaking proofreaders. Brian did not invent online proofreading. He found an existing market, identified specific ways to be better, and executed relentlessly.
The takeaway for listeners is to think beyond affiliate marketing and content sites. Brian delivers a real service to real customers online. The internet allows him to aggregate customers from around the world who need proofreading, reaching a market that would be impossible to serve from a single physical location.
Key Takeaways
- You do not need an original idea; find an existing market and find ways to differentiate
- Competition validates that people are willing to pay for what you want to sell
- Personal interest in your business makes the hard work sustainable
- Anticipate changes in your business and pivot before decline forces your hand
- The internet lets you aggregate customers worldwide for services that would be local otherwise
- Think beyond affiliate marketing: delivering real services online is a powerful business model
What's Changed Since This Episode
Mark recorded this in April 2014. Brian's entrepreneurial principles remain timeless.
Online service businesses have exploded. The model Brian pioneered with ProofreadingPal, delivering professional services entirely online, has become standard across dozens of industries. Platforms like Upwork, Fiverr, and specialized marketplaces make it easier than ever to launch service-based businesses.
AI has disrupted the proofreading industry. Tools like Grammarly and AI writing assistants have changed how people approach editing. Human proofreading services now differentiate on nuanced judgment, academic standards, and discipline-specific expertise that AI cannot reliably provide.
The creator economy has validated the side-hustle-to-business path. Brian's journey from dorm room project to full-time business is now a well-worn path for thousands of entrepreneurs who start with a passion project and scale it into their primary income.
Resources Mentioned
- ProofreadingPal — Brian's online proofreading and editing service
- GameRosters.com — Brian's first online business
- LNIM Podcast
Related Episodes
If you found this episode helpful, you might also enjoy:
- LNIM075 Transcript — Full Interview with Brian Kaldenberg
- LNIM071 — Starting a Niche Site Business with Justin Cooke
- LNIM076 — Getting Started Online
Listen and Subscribe
Listen to Late Night Internet Marketing on Apple Podcasts or subscribe at latenightim.com/internet-marketing-podcast/. Have a question for Mark? Call the digital recorder at 214-444-8655 or drop a comment below.




Thanks Mark – what a great episode, once again. And Brian just lays it bare on how to concoct a business idea. Don’t reinvent the wheel is my key takeaway from this episode – just figure how to differentiate!
Great show Mark! I appreciate the carefully chosen words for the bonus college sports analysis! (or my daughter does).
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