My itch is that outdoorers and outdoor clubs (climbing, kayaking, caving, etc.) are still living in the 90'. They have shitty portals and forums. There is no worldwide directory of people and, especially, clubs and events and it sucks (especially if you are an expat like me and change often city).

There you go. How would you go about this? Social network? Forums? Magazine? All of the 3 and more? What about monetization? Don't worry, just being a bit rant-ish, I know those are tough questions.