One of the biggest barriers to the growth of the open data movement in my opinion is that nearly every open data related meeting/event is still comprised primarily of data geeks and app developers. The language that is used by this community (e.g. machine readable data, open access, genomes, geo-spatial, etc…) confuses the typical non-geek beyond hope. If you don’t capture the minds of the non-geeks out there to stimulate demand, how on earth are open data initiatives (e.g. data.gov and data.gc.ca) going to stay alive?