And, when it comes to retention, the report reveals email marketing and social media as the top two activities followed by retargeting and organic search. The report also looks at which online travel marketing channels get the most marketing spend with paid search coming out first for 40% of respondents, followed by email and search engine optimisation. Although social media is recognised as quite a big driver for customer acquisition, it doesn’t seem like a lot of budget is diverted to it with only 7% of respondents ranking it first. Get the full story at Tnooz and download the report at Performance Horizon (free registration)