The document discusses 5 major digital marketing trends for 2013: 1) Native advertising will become more prevalent as brands promote content in a non-interruptive way. 2) Social TV will grow as more channels encourage viewers to interact on social media while watching shows. 3) Fragmentation across devices, channels, and platforms will continue posing challenges for marketers to reach consumers. 4) Content marketing will be an increased area of focus for brands as they build expertise in creating and sharing valuable content. 5) The use of "smart data" to understand consumer behavior from structured and unstructured data sources will be important for personalizing marketing messages.