Question2Answer - September 2012

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About Question2Answer (Q2A), a popular open source platform for Q&A websites, built on PHP and MySQL.

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Question2Answer - September 2012

  1. 1. Question2Answer Dr Gideon Greenspan gidgreen.com
  2. 2. Inspiration (1)Dr Gideon Greenspan Question2Answer — Slide 2 gidgreen.com
  3. 3. Inspiration (2)Dr Gideon Greenspan Question2Answer — Slide 3 gidgreen.com
  4. 4. Question2Answer•  “free open source platform for Q&A sites”•  PHP / MySQL•  Installation modeled on WordPress –  Create database –  Enter database details –  Upload files –  Go to web pageDr Gideon Greenspan Question2Answer — Slide 4 gidgreen.com
  5. 5. Q2A Contributors•  Core only me (my choice)•  Democratic (mostly) roadmap•  20 localizations•  10 themes (mostly not good)•  50 plugins –  30 by one personDr Gideon Greenspan Question2Answer — Slide 5 gidgreen.com
  6. 6. Live Q2A sites 7,000 6,000 5,000 4,000Sites 3,000 2,000 1,000 0 Jan 11 May 11 Sep 11 Jan 12 May 12 Sep 12Dr Gideon Greenspan Question2Answer — Slide 6 gidgreen.com
  7. 7. Example 1: Frageee.de 34,994 questions 3,891 registered usersDr Gideon Greenspan Question2Answer — Slide 7 gidgreen.com
  8. 8. Example 2: Orange Israel 7,650 questions 1,160 registered usersDr Gideon Greenspan Question2Answer — Slide 8 gidgreen.com
  9. 9. Example 3: Propongo 3,886 “proposals” 3,869 registered usersDr Gideon Greenspan Question2Answer — Slide 9 gidgreen.com
  10. 10. Example 4: PokeBase 12,195 questions 7,048 registered usersDr Gideon Greenspan Question2Answer — Slide 10 gidgreen.com
  11. 11. Aggregate Users 600,000 500,000 400,000 300,000Users 200,000 100,000 0 Jan 11 May 11 Sep 11 Jan 12 May 12 Sep 12Dr Gideon Greenspan Question2Answer — Slide 11 gidgreen.com
  12. 12. Comparison (Sept 2012) Question2Answer Stack Exchange (excluding spammy sites) (excluding Stack Overflow) Sites 6,036 89 Sites >1k Qs 73 61 Questions 634,053 841,790 (visible to Q2ABot) Users 501,076 929,948 (registered only) (registered and unregistered) Languages 40 1Dr Gideon Greenspan Question2Answer — Slide 12 gidgreen.com
  13. 13. Size of Core Codebase 50 1.5 40 1.4 30 1.3 1.2kLOC 1.0 20 10 MVP 0 Sep 09 Mar 10 Sep 10 Mar 11 Sep 11 Mar 12Dr Gideon Greenspan Question2Answer — Slide 13 gidgreen.com
  14. 14. Lesson 1 — Licensing http://osrc.blackducksoftware.com/data/licenses/Dr Gideon Greenspan Question2Answer — Slide 14 gidgreen.com
  15. 15. Lesson 2 — Plugins https://github.com/NoahY/q2a-badgesDr Gideon Greenspan Question2Answer — Slide 15 gidgreen.com
  16. 16. Lesson 3 — EcosystemDr Gideon Greenspan Question2Answer — Slide 16 gidgreen.com
  17. 17. Lesson 4 — Keep it ObviousSELECT BINARY name AS name FROM … (one query, less latency, but worse)SET NAMES utf8SELECT name FROM … (two queries, more latency, but better)Dr Gideon Greenspan Question2Answer — Slide 17 gidgreen.com
  18. 18. Lesson 5 — Eye candyDr Gideon Greenspan Question2Answer — Slide 18 gidgreen.com
  19. 19. Exit strategyDr Gideon Greenspan Question2Answer — Slide 19 gidgreen.com

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