Hi there!
I am trying to establish a standard for external links to various
platforms (including but not only facbook, qype, foursquare etc.) while
facebook and qype are widely known, there are thousands of smaller or
regional services which provide...
* ...the ability to write and read reviews about a place
* ...the ability to 'check in' at a certain place
* ...the ability to publish events pointing at a certain place
* ...further information (like contact data, opening hours etc.) about
a place
Also lots of location operators don't even have their own website. It
becomes more and more common only to have a 'place' at facebook. So
using the website=* tag would be incorrect.
Linking to third party services can come in handy...
* ...for users to check-in/review/whatever
* ...for service providers to get more visits
* ...for developers for whatever they come up next
* ...for mappers to verify existing tags about the place
I observed multiple patterns how people tried to add these information
as tags to osm. Here are some examples:
url:[service_name]
url:facebook
url:myspace
social_network:[service_name]
social_network:facebook
social_network:twitter
social_network:youtube
social_network:myspace
social_network:flickr
link:[service_name]
link:facebook
link:qype
link:twitter
web:[service_name]
web:facebook
web:twitter
[service_name]
foursquare
facebook
google+
myspace
website:[service_name]
website:qype
ref:[service_name]
ref:qype
The most popular service appear to be (sorted by frequency):
1. Facebook
2. Foursquare
3. qype
4. myspace
I wouldn't like to limit the tagging to these dominating platforms. New
players should be threaten equally. Maybe this could encourage future
services to use (and contribute to) the OSM.
And as we have no idea what the upcoming services will be called I
recommend to prefix them with something like:
url:[service_name]
web:[service_name]
link:[service_name]
website:[service_name]
I don't recommend social_network:[service_name] because not all of
these services are actually social networks.
Using a prefix gives us the following advantages:
1. In case of namespace collisions
For example lets imagine in 10 years another location based service
gets popular which is called "amenity.com". How to name the key for
links in this case as amenity=* is already occupied by are more
important meaning.
2. Editors and developers will know what the prefixed tag stands for
even if they don't know the particular service. Imagine you find
something like asdf=*. how can you know that there is a service
out there called asdf.eu?
I tried this on this node which is a bar with a link-prefix:
http://www.openstreetmap.org/browse/node/905883257
Well what do you think?
Cheers,
Alexander
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