[Tagging] contact:* for review websites

[Warin]

On 16-Sep-17 08:56 AM, Tom Pfeifer wrote:
> I have seen a few mappers recently adding
> contact:[ yelp | tripadvisor | foursquare ]
> to businesses.
>
> IMHO these are not means of contact, instead these are review 
> websites. While I personally think that we do not need them in OSM at 
> all, they certainly do not belong in the contact:* namespace.
>
> Opinions? 

+1 not in contact namespace.

-1 for not in OSM.

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Perhaps a review:*=* namespace?

Err .. review has some 73,000 uses .. most in Korea.
No wiki page.
95% used with highway .. could be a checked type thing?