Hacker News Insights research
Hacker News in 2009
The strongest tracked Hacker News title themes in 2009, with annual shares and historical context.
Data through 2026-07-13
This page ranks the tracked topics by their share of retained Hacker News story titles in 2009. It is a full calendar year; topic patterns can overlap and the list is not a taxonomy of every story.
| Rank | Topic | Category | Title share |
|---|---|---|---|
| 1 | Startups | Meta | 2.585% |
| 2 | Open source | Meta | 0.795% |
| 3 | Python | Languages | 0.773% |
| 4 | Linux | Infra | 0.716% |
| 5 | JavaScript | Languages | 0.688% |
| 6 | Security | Crypto & privacy | 0.677% |
| 7 | jQuery | Web | 0.393% |
| 8 | Privacy | Crypto & privacy | 0.208% |
| 9 | AI / LLM | AI | 0.136% |
| 10 | Postgres | Data | 0.054% |
| 11 | Redis | Data | 0.045% |
| 12 | MongoDB | Data | 0.041% |
Context markers
- 2009-06 — Node.js / npm era begins: Node.js introduced 2009; server-side JS takes off.
- 2009-11 — Go announced: Google publicly announces the Go language in November 2009.
Method
Every percentage uses that year's retained story-title count as its denominator. Visit the Attention Lab for 2009 or read the methodology.