[OSM-newbies] layers in OSM?

[Xan]

Hi,

Perhaps it's outside the scope of this list, but I will try. I'm just 
curious. Is there any way of seeing "layers" of things in OSM: the layer 
of shops (only things tagged with shop= ), the layer of bus stops, the 
layer of bus routes, the layer of industrial areas, the layer of the 
waterstreams....

Perhaps one time we want one show the rivers in the map. Why we have to 
see the residential highways?

Good if in some future the users could choose layers in OSM map, I think.

Any hint?
Xan.