Marketers are responding to these consumer trends. According to Videology, travel gained significant market share of between Q1 and Q2 2013, increasing from 3.2% to 5%. Furthermore, Advertiser Perceptions runs a semiannual survey of US advertisers, and develops an “optimism index” based on the difference between percent of respondents who increased and decreased their ad budgets during the survey period. According to the index covering spring 2013, travel advertisers who planned to increase their mobile and digital video spending far outnumbered those who planned to decrease it, a difference of 71 and 62 percentage points, respectively. Read the rest at eMarketer.