We do content marketing, and all our new clients come via inbound marketing. How they find us:
1. Referrals from other clients
2. Reach from my personal brand, alexisgrant.com
3. Google search and land on our website, socialexis.com -- I'm always shocked to hear this because we haven't yet put a lot of effort into the design of the site, and we don't update a blog there (we have prioritized serving clients over redesigning the website). It brings in business even though it's basic!
4. When I (founder of the biz) speak at events

Hope that helps!
@alexisgrant