As of 2022-03-07, the Wikidata property Hacker News username (P7171) is used on 86 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P2002 Twitter username 75
 0.0002
P2037 GitHub username 61
 0.0080
P6634 LinkedIn personal profile ID 48
 0.0009
P4265 Reddit username 40
 0.0462
P2013 Facebook ID 36
 0.0002
P646 Freebase ID 29
 0.0000
P2087 Crunchbase person ID 28
 0.0161
P6837 Keybase username 23
 0.1769
P2456 DBLP author ID 16
 0.0003
P1960 Google Scholar author ID 13
 0.0002
P214 VIAF ID 13
 0.0000
P3417 Quora topic ID 12
 0.0001
P7859 WorldCat Identities ID 12
 0.0000
P244 Library of Congress authority ID 11
 0.0000
P4174 Wikimedia username 9
 0.0048
P2671 Google Knowledge Graph ID 9
 0.0000
P213 ISNI 8
 0.0000
P3899 Medium username 7
 0.0075
P2963 Goodreads author ID 7
 0.0003
P648 Open Library ID 7
 0.0000
P345 IMDb ID 7
 0.0000
P9743 Podchaser creator ID 6
 0.0004
P1006 Nationale Thesaurus voor Auteurs ID 6
 0.0000
P269 IdRef ID 6
 0.0000
P227 GND ID 6
 0.0000
P496 ORCID iD 6
 0.0000
P4175 Patreon ID 5
 0.0048
P5034 National Library of Korea ID 5
 0.0001
P349 National Diet Library ID 5
 0.0000
P2003 Instagram username 5
 0.0000
P8189 National Library of Israel J9U ID 5
 0.0000
P549 Mathematics Genealogy Project ID 5
 0.0000
P691 NKCR AUT ID 5
 0.0000
P1207 NUKAT ID 5
 0.0000
P3267 Flickr user ID 4
 0.0020
P6005 Muck Rack journalist ID 4
 0.0006
P2397 YouTube channel ID 4
 0.0001
P1280 CONOR.SI ID 4
 0.0000
P268 Bibliothèque nationale de France ID 4
 0.0000
P8754 OpenStreetMap numeric user ID 3
 0.0214
P4411 Quora username 3
 0.0075
P7400 LibraryThing author ID 3
 0.0003
P3040 SoundCloud ID 3
 0.0001
P5297 Companies House officer ID 3
 0.0001
P1263 NNDB people ID 3
 0.0001
P5361 BNB person ID 3
 0.0001
P2038 ResearchGate profile ID 3
 0.0001
P3762 openMLOL author ID 3
 0.0000
P4955 MR Author ID 3
 0.0000
P2949 WikiTree person ID 3
 0.0000

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P6837 Keybase username 23
 0.1769
P4265 Reddit username 40
 0.0462
P8754 OpenStreetMap numeric user ID 3
 0.0214
P2087 Crunchbase person ID 28
 0.0161
P9125 Microsoft MVP profile ID 1
 0.0104
P10212 Stack Exchange user ID 1
 0.0080
P2037 GitHub username 61
 0.0080
P3899 Medium username 7
 0.0075
P4411 Quora username 3
 0.0075
P3276 Angel List ID 2
 0.0070
P7638 OverDrive creator ID 1
 0.0054
P4174 Wikimedia username 9
 0.0048
P4175 Patreon ID 5
 0.0048
P5801 Academia.edu topic ID 1
 0.0047
P7671 Semion author ID 1
 0.0047
P4232 Figshare author ID 1
 0.0039
P7771 PersonalData.IO ID 1
 0.0039
P6329 Share-VDE author ID 2
 0.0038
P4594 arXiv author ID 1
 0.0034
P4016 SlideShare username 1
 0.0032
P1714 Journalisted ID 1
 0.0029
P2607 BookBrainz author ID 2
 0.0027
P3267 Flickr user ID 4
 0.0020
P3232 PhilPapers author ID 1
 0.0019
P4033 Mastodon address 1
 0.0018
P6325 Critique d'art ID 1
 0.0018
P3052 Bloomberg person ID 1
 0.0014
P5797 Twitch channel ID 2
 0.0012
P6634 LinkedIn personal profile ID 48
 0.0009
P5705 Los Angeles Review of Books author ID 1
 0.0008
P7445 Basis Wien person ID 2
 0.0008
P3913 MobyGames developer ID 1
 0.0008
P2984 Snapchat username 1
 0.0008
P6119 Letterboxd actor ID 1
 0.0007
P6005 Muck Rack journalist ID 4
 0.0006
P3388 LittleSis people ID 2
 0.0006
P3943 Tumblr username 2
 0.0005
P3258 LiveJournal ID 1
 0.0005
P3836 Pinterest username 2
 0.0004
P9743 Podchaser creator ID 6
 0.0004
P2611 TED speaker ID 1
 0.0004
P5337 Google News topics ID 2
 0.0004
P9100 GitHub topic 1
 0.0004
P3789 Telegram username 1
 0.0004
P3747 SSRN author ID 1
 0.0004
P864 ACM Digital Library author ID 1
 0.0004
P4862 Amazon author ID 2
 0.0003
P2963 Goodreads author ID 7
 0.0003
P2190 C-SPAN person ID 2
 0.0003
P7400 LibraryThing author ID 3
 0.0003