About Modem Digital

Modem SEO is a Search Engine Marketing (SEM) and Search Engine Optimization (SEO) agency. We help companies promote and advertise themselves on major digital platforms like Google, Bing, Youtube, Facebook, and more. While these platforms are open for anyone to use, it takes significant expertise and time to utilize them to their full potential.

Company History

Modem Digital began out as a general marketing consulting business called Greater Sum Marketing which was started by  Sean Kelly in 2014. After four years of working part time as a general marketing consultant, in 2018 Sean began working full time and started focusing on the growing demand for website design and online advertising services. To communicate this new specialization, Sean rebranded his consulting business under the name Modem and over the past several years has continued to develop and refine his methods to better serve his client’s needs. 

Modem's Values

1. Empowerment

We work hard to give our clients the resources and expertise they needed to effectively market their businesses online.  We also think it is important to help our clients better understand the principals of digital marketing so they can make informed decisions. 

2. Transparency

We aren’t afraid to give clients honest feedback or admit to any (rare) errors that may occur, even when it may not be in our own best interests to do so. Honesty and integrity are the foundation of any successful business relationship.

3. Communication

Listening to the client’s direction and their customer’s feedback is always essential in creating successful marketing campaigns or projects.   


Sean Kelly
Modem Digital Founder

I help build the connections that bring people together. I’ve been doing that as a marketing consultant since 2014, and in that time I’ve helped clients in consumer goods, non-profit organizations, and the creative arts to more effectively communicate with their customers and other shareholders. My education includes two marketing degrees, a Bachelor’s  from Columbia College in Chicago and a Master’s from Roosevelt University.

For fun I like to playing board games with friends,  watch sci-fi shows, read comic books, and listen to hip hop and house music.