WhereBy.Us creates stories, experiences, and daily local newsletters to help people plug into their cities — all powered by WordPress. This year, we moved to a WordPress Multisite instance, added a build process for multiple developers, built an app to sell newsletter advertising and moved newsletter creation from MailChimp’s UI into WordPress using a plug-in. We’ll walk you through why and how we made the switch, addressing all the benefits, drawbacks and solutions we found along the way.