You've stumbled across the ramblings of a cycling mapper from Swanley in Kent. I discovered OSM in March 2008 & became quickly engrossed. OSM has become my favourite hobby, & my wife & I now find that mapping is part of our objectives when on one of our trips away from home. Indeed, mapping as many nordic ski routes as we could on a recent holiday in Germany added to the interest enormously.
I find researching the tools to get data out of OSM is something of a challenge, but have managed to produce several maps for my garmin, including a nordic ski route map, which proved helpful (albeit for checking if there was more to map when out skiing!). I'm probably safer sticking to the job of surveying & updating the map as my laptop now seems to be littered with programs I've downloaded but haven't yet worked out completely how to use.
I started using a bluetooth GPS linked to a Palm TX running Fugawi software. If anyone has problems with a similar setup I'm more than willing to pass on my knowledge.
I currently use either a Garmin etrex, bought because I could put OSM data on it, or a Navi GT-31 which is nice to use because of its simplicity & is not too heavy when fitted to the top of a cycle helmet!