  Hello! Many thanks for your feedback.  Listed below are my responses to your concerns:  1. I don't think your link belongs in that section or possibly that page at all  perhaps it would be better in List of geocoding systems. Response: A line in the Limitations section states:  “An alternative to storing Geohashes as strings in a database are Locational codes, which are also called spatial keys and similar to QuadTiles”.  Furthermore, links to Geohash-36, and Natural Area Code geocodes are mentioned in the see also section.  Hence, other systems have been mentioned on this page, and comparisons have been drawn.  If you have any suggestions on any other section to which I might move my contribution, then, please do let me know.  2. may also be inappropriate to include it on Wikipedia if people aren't using it yet  Wikipedia is an encyclopedia, not a directory. Response: Gustavo Niemeyer used wikipedia to publish the Geohash geocode.  The first entry in this article’s history states “Gniemeyer (talk | contribs) . . (3,630 bytes) (+3,630) . . (First public document with the algorithm. The algorithm has been put in public domain.)”.  It seems to me that a single line on an existing page would constitute a smaller change.  I do understand that there might be apprehensions about mentioning a geocode system on Wikipedia that has not be tested by the greater community.  Although, I have not seen any evidence of Mr. Niemeyer having such constraints when he published his system, I have edited my contribution, and it now states: “Another system known as GeoZip might provide a simpler way of achieving similar results if the application does not require the resulting code to be in a compressed format.  This claim made by the GeoZip inventor has not been verified yet.”   