Following several years rapid growth in online social media use worldwide, many charities remain unsure what this means for fundraising. Building on data from over 6 million UK and US donors, supporting some 6,000 charities through online giving platforms JustGiving and Firstgiving, this session will not only help you better understand the theory of online social network fundraising but also how to maximise newly developing opportunities and what to measure when fundraising through social networks all illustrated with lessons learned through detailed analysis and primary research with online donors.