Delicious Friendship Network (December 2010)

A Delicious (social bookmarking) dataset of 536,408 users and 1,366,663 friendship edges, collected by Aneeth Anand via Delicious crawl (December 2010). Each record contains user-user friendship edges and user IDs. The dataset is notable for its friendship network from the Delicious social bookmarking service, where users stored, shared, and discovered web bookmarks. Intended for research into social network analysis, community detection, information sharing behavior, and social bookmarking platform structure studies.

#Social bookmarking

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Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 536,408 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

536.4K
Nodes
1.4M
Edges
9.50e-06
Density
126
Components
-0.06916
Assortativity
0.0%
Reciprocity
304.6K
Bridges
Most central nodes
7230.006
10470.00572
50090.0049
19190.00475
68880.00399
39690.00383
7060.0037
256370.00327
8440.00322
87380.00322

Computed over the full corpus.

Record

Catalog key
delicious
Authors
Anand, Aneeth; Zafarani, R.; Liu, H.
Year
2010
Source paper
Delicious Social Bookmarking Friendship Network Dataset
License
Academic Use (see Syracuse Data Lab terms) (LicenseRef-Research-Only)
Records
536,408
Nodes
536,408
Edges
1,366,663
Nodes are
user
Edges are
friendship
Attributes
nodes have no attributes; edges have no attributes
Languages
en
Collected
December 2010 (2010s)
Tasks
From the graph: link prediction, community detection
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://datasets.syr.edu link checked
Hosted copy
Mirrored on echo.directory on 2026-10-09, 17.7 MB across 3 files. Checksums in MANIFEST.json.

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@misc{anand2010delicious,
  title     = {{Delicious Social Bookmarking Friendship Network Dataset}},
  author    = {Anand, Aneeth and Zafarani, R. and Liu, H.},
  year      = {2010},
  publisher = {Data Lab, Syracuse University},
  url       = {https://datasets.syr.edu}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Anand, A., Zafarani, R., & Liu, H. (2010). Delicious Friendship Network (December 2010) [Data set]. https://delicious.echo.directory/

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Anand, Aneeth, et al. Delicious Friendship Network (December 2010). 2010, delicious.echo.directory/.

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