If the business is closed you can just delete the mode. I usually save the address info for use by the next occupant

JOSM Validator is complaining of errors on your platform in Mount Vernon, WA.

Nice - I removed a duplicate park node from the lower left corner of the park.

Thanks for changing it!

Did you intend the Ptarmigan Traverse and the other trail you added to be a footway instead of path? Footway is something often seen in a city park where a path would be what I expect in this area.

I reverted your edit. Please read the wiki on how to edit and use proper tags.

I expanded the street name. OSM spells out street names to avoid software problems trying to un-abbreviate them.

should have been made by my Glassman username.

should have been made by my Glassman username.

should have been made by my Glassman username.

should have been made by my Glassman username.

this should have been from my Glassman user name

Instead of using the name tag to describe feature, use an appropriate tag instead or no name tag. For example, "pond on golf course" is tagged as a pond and it's inside of the course. That's all that's needed. Descriptions can be used instead, for example the retirement home if you don't know the name of the facility. I fixed the pond but the others should be fixed as well. Let me know if you need help.

It looks like someone before you created the multipolygon for the college boundary which is perfect. Unfortunately all of the buildings inside are also part of the relation. They probably should be stand alone.

The BLM does own land where you added the recreation site, but's its not listed as a park. You could make it landuse=public, and label it as BLM lands. See http://gis.co.kittitas.wa.us/compas/default.aspx for ownership of the land. Also look up landuse in wiki.openstreetmap.org

Landuse is a more appropriate boundary for a school. Admin boundaries are used for cities, counties, etc. I went ahead and made the change as well as modified the area to match Clark County Records.

Is Summit View High School part of CASEE? It is included in your boundary.

We don't use descriptive names, like name=Appartment. I changed the building=yes to building=apartments.

I reversed George Creek direction. Rivers and streams should be the same as the direction as the water flow. Also, the path, Asotin Waterfront Trail ends in the Chief Looking Glass park but doesn't connect to the service road and parking lot. Should it? By making a connection, it will enable routers to do multimodal routing.

You can draw a area around the development, tag it as landuse=residential and then add a name. Otherwise your node will not show up on the rendered map.