Contributions from Spark Capital and Accel Partners are part of a $3.5 million (£2.3 million) investment which is set to fuel the expansion of Qriously's US and European footprint.
London-based start-up Glow Digital Media has attracted the interest of a number of seed backers and secured $1.3 million (£823,000) for its development efforts.
Marketing technology business Performance Horizon Group has secured a second round of fundraising, with growth capital coming from investors including Greycroft Partners and DN Capital.
Trinity Mirror, which publishes British newspaper titles including the Daily Mirror and People, has purchased Communicator Corp as it looks to build its digital marketing business.
VCT fund manager Beringea has sold its equity interest in digital marketing agency Steak Media after a five-year investment that included the expansion of the business internationally.