2011/1/31 Marko Mäkelä <marko.makela@iki.fi>:
If nobody can suggest a better symbol for amenity=shelter, I would remove amenity=shelter altogether from the default style. There seems to be some agreement that amenity=shelter may be too inaccurate tagging for the tourism or hiking related shelters.
I have to disagree; amenity=shelter was meant to be hiking and tourism related from the start. (http://wiki.openstreetmap.org/wiki/Proposed_features/Shelter)
Side note: the unsearchable 0x6412 'hiker symbol' could be a good choice for some minor hiking feature. I think that sites where overnighting is possible do require a searchable symbol.
While I think it's good to distinguish simple structures like shelters from fully equipped overnighting places, it would be cool if shelters were searchable, so you can do a search for the nearest shelter when weather turns bad... -Martin