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en This user speaks English at a professional level.
de Dieser Benutzer spricht Deutsch als Muttersprache.
es-3 Este usuario puede contribuir con un nivel avanzado de español.
fr-1 Cette personne peut contribuer avec un niveau élémentaire de français.

Hey fellow mapper, I am Alex Barth with MapBox. I am also board member of the US Chapter of OpenStreetMap. You can find me on Twitter or email me through my contact page.

Public domain
All my contributions to OpenStreetMap are released into the public domain. This applies worldwide.
In case this is not legally possible, I grant anyone the right to use my contributions for any purpose, without any conditions, unless such conditions are required by law.

For a background on how share alike on data is backfiring for OpenStreetMap, check out my diary entry "OpenStreetMap Isn't All That Open, Let's Change That and Drop Share-Alike"