Key:contact:facebook
 contact:facebook
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| Description |
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Username or URL of the Facebook page at which the point of interest can be contacted. 
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| Group: annotations |
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| See also |
| Status: in use |
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To define a Facebook-Page or -Profile of an object. The value is the Page-/Profile-URL or the Pagename. In most cases, the full URL is used as value. It is also possible to add the username or page name only (the part after the last '/'). This requires the user software to add the appropriate URL prefix, but it makes it easier to adapt to special needs like offering the mobile version of the page or a random language version.
It must be an official way of contacting.
The key facebook=* is in use as well, but less often.
How to use?
Assign this tag to any object (nodes, ways, or relations):
- contact:facebook=https://www.facebook.com/FacebookUserName
- contact:facebook=FacebookUserName
As described above, both versions are valid. If you prefer to add the full URL, please make sure you link to the generic facebook.com page, use https, don't use any language-subdomains, and remove all possible tracking tokens that might be shown in the address bar of your browser. Facebook itself is able to forward every user to their preferred version of the website (mobile, language), so there is no need to add a specific selection to OSM.
facebook or contact:facebook?
These tags are two equal means of documenting official Facebook contact channels. Both are in use and popular among mappers. As of February 2021, "facebook" tag was used by 2500 unique mappers and "contact:facebook" by 5500 unique mappers.
Country restrictions
If you can't reach a Facebook page (in another country), it doesn't mean that this page doesn't exist. It is possible to define country restrictions on Facebook to block access from other countries.
So please be careful when deleting Facebook pages that you cannot reach.