A new survey of marketing decision makers in the US and UK has found many CMOs to be understating the strategic value of search engine marketing (SEM) on their overall business. The data published by Adthena shows SEM to be massively important to CMOs and a key area of current and planned investment. But when it comes to competitor analysis and ROI, there are still notable gaps in how it is being used. SEM vital to CMOs According to Zenith,…