In addition to writing and editing for the publications he works for, Jewett spent six years as the Web Editor first for Oakland and Alameda magazines and later for Marin Magazine. He helped Oakland and Alameda get their sites up and running and published content for them during his time there and, later, published content and helped to innovate the Marin Magazine site. He saw Marin through several complete redesigns, managed its numerous databases, implemented Google DFP ad serving on the site and was an industry leader in terms of the application of new technology.

All the sites Jewett has worked on have been on the Gtxcel/Rivista CMS and Marin has been among a handful of publications nationwide on the forefront of developments with the Berkeley-based company — the leading CMS choice for magazines in the City and Regional Magazine Association (CRMA) — including iPhone apps, Facebook integration and HTML5.