I would like to invite kayaking/skiing/snowboarding/climbing specialists to contribute to Main Page - ExtremeWiki
Unlike Wikipedia, ExtremeWiki accepts very niche info about extreme sports as we have categories for person profiles, websites, podcasts, films, etc.
Anyone can read, write and edit articles on EW and we dont want to be just text, so most articles include Youtube videos as well.
Besides videos, EW works with Flickr photos and Google Maps.
Check for example article about Tao Berman, professional kayaker: Tao Berman - ExtremeWiki
Hopefully people find this wiki useful. All development ideas are very welcome!