Digg Friendship Network (December 2010)
A Digg (social news) dataset of 771,231 users and 5,911,205 friendship edges, collected by Mithila Nagendra via Digg crawl (December 2010). Each record contains user-user friendship edges and user IDs. The dataset is notable for its friendship network from the pre-v4 Digg social news platform, where users voted stories up (digging) or down (burying). Intended for research into social network analysis, community detection, information diffusion, and social news platform structure studies.
Cite this dataset at
digg.echo.directory
Analytics
The full graph has 771,231 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.
Computed over the full corpus.
Record
- Catalog key
digg- Authors
- Nagendra, Mithila; Zafarani, R.; Liu, H.
- Year
- 2010
- Source paper
- Digg Friendship Network Dataset
- DOI / arXiv
- 10.1140/epjds5
- License
- Academic Use (see Syracuse Data Lab terms) (LicenseRef-Research-Only)
- Records
- 771,231
- Nodes
- 771,231
- Edges
- 5,911,205
- 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, 88.9 MB across 3 files. Checksums in MANIFEST.json.
Citations
Social dynamics of Digg
T. Hogg, Kristina Lerman
EPJ Data Science · 2012
Cited by
- Social dynamics of Digg
T. Hogg, Kristina Lerman · EPJ Data Science · 2010 · cited 167×
Citation data from Semantic Scholar, retrieved 2026-10-19.
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{nagendra2010digg,
title = {{Digg Friendship Network Dataset}},
author = {Nagendra, Mithila 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
Nagendra, M., Zafarani, R., & Liu, H. (2010). Digg Friendship Network (December 2010) [Data set]. https://doi.org/10.1140/epjds5
MLA
Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.
Nagendra, Mithila, et al. Digg Friendship Network (December 2010). 2010, doi.org/10.1140/epjds5.