There are (currently) 50 #OpenStreetMap changesets with the tag ""="". i.e. empty string for key & value. 🤯
Although some are predate API0.6, many were made with the current API.
There are 65 #OpenStreetMap changesets tagged with an empty key, and non-empty value.61 (93%) are ""="(new value)". i.e. empty string for key, and "(new value)" for the value.e.g. https://osm.org/changeset/112842561
There are > 630,000 #OpenStreetMap changeset tags with a non-empty key and empty value. Unsurprisingly, 450K (65%) are the `comment` changeset tag, and 222K (32%) are `source` i.e. people leaving the `comment` or `source` blank.
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