Similar discussions going on in the cartography branch among UW Madison geography folks. Start with the post by Tim Wallace (where the above Venn came from). Then read the responses of Andy Woodruff and Daniel Huffman.
FlowingData explores how designers, statisticians, and computer scientists are using data to understand ourselves better — mainly through data visualization.
As for me, I'm Nathan Yau, and I have a PhD in statistics, with a background in eating.