Comprendia Bioscience Consulting Group has developed an interesting way to demonstrate who is passionate about Open Access using Google maps. They have collected 11 months of geographical information on Twitterers utilising #openaccess hashtag, totalling 43,000 tweets by 12,000 twitterers. The global map shows the location of the top 1,000 twitterers using #openaccess hashtag. An earlier map by Comprendia using #scicomm hashtag was extremely popular and raised a few questions in the science communication community. Why were they not on the map? In reply, Comprendia suggests you should "find/create/use more hashtags in your posts if you are passionate about a topic and make sure your Twitter profile lists your location." Then you may be on the next map they decide to publish.