Toronto-based integrated advertising agency john st. has announced the appointment of Tom St John, an accomplished entrepreneur with over 15 years of experience, to lead the agency’s digital services. During his career St John has built global digital media and consumer internet businesses from concept through to final acquisition including Makeup.com, Automobile.com and Searchforvideo.com. The next six months will see john st. continue to build its team in the areas of digital strategy, development, marketing and analytics.