[OSM-talk] massgis:MANAGR_ABR=M173BS, massgis:DEED_ACRES=0.00000000 and other useless(?) tags

[Mateusz Konieczny]

I encountered https://www.openstreetmap.org/way/29690455 that is
obviously result of some unfinished import - somebody dumped random
database fields into OSM such as

massgis:DEED_ACRES=0.00000000
massgis:MANAGR_ABR=M173BS

and many other tags such as:

massgis:ARTICLE97
massgis:ASSESS_ACR
massgis:ASSESS_LOT
massgis:ASSESS_MAP
massgis:ATT_DATE
massgis:EOEAINVOLV
massgis:FEESYM
massgis:FY_FUNDING
massgis:LEV_PROT
massgis:MANAGR_ABR
massgis:MANAGR_TYP
massgis:OS_DEED_BO
massgis:OS_DEED_PA
massgis:OWNER_ABRV
massgis:PRIM_PURP

There are also tags that are an internal database info and seem to be
utterly useless for OSM.

massgis:SOURCE_MAP
massgis:SOURCE_TYP
massgis:BASE_MAP
massgis:DCAM_ID
massgis:OS_ID
massgis:POLY_ID
massgis:TOWN_ID

Area is already available from geometry itself - it should not be tagged
separately - so this tag is also probably useless.

massgis:DEED_ACRES

There are also some tags that in theory may be useful but meaning is
unclear.

massgis:PUB_ACCESS
massgis:OWNER_TYPE
massgis:FEE_OWNER
massgis:MANAGER

And there is massgis:SITE_NAME, useful if it is different from name tag
(there are even 1729 ways with massgis:SITE_NAME, without name tag
indicating either really poorly done import or probably unwanted data
deletion - see http://overpass-turbo.eu/s/u3L )

Such useless tags are confusing and may mislead future users
that dumping random tags into OSM is a good idea. I think that data
would be improved by deleting such tags (except massgis:SITE_NAME that
is potentially useful).

Would it be OK to delete 

massgis:ARTICLE97
massgis:ASSESS_ACR
massgis:ASSESS_LOT
massgis:ASSESS_MAP
massgis:ATT_DATE
massgis:EOEAINVOLV
massgis:FEESYM
massgis:FY_FUNDING
massgis:LEV_PROT
massgis:MANAGR_ABR
massgis:MANAGR_TYP
massgis:OS_DEED_BO
massgis:OS_DEED_PA
massgis:OWNER_ABRV
massgis:PRIM_PURP
massgis:SOURCE_MAP
massgis:SOURCE_TYP
massgis:BASE_MAP
massgis:DCAM_ID
massgis:OS_ID
massgis:POLY_ID
massgis:TOWN_ID
massgis:DEED_ACRES

tags across USA? Would it be OK to do it with a mechanical edit? If yes
- what should be done before doing that?

If such tags have some value - can you consider documenting them on the
OSM wiki?