Altruism Squared? The Economics of Statalist Exchanges Martin Weiss UniversitityofTuebingen,Germany Presentation to the Stata Conference, Washington DC, July 2009 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 1/21 Outline 1 Introduction 2 Economic Behavior 3 Statalist Output 4 References MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 2/21 Introduction Outline 1 Introduction 2 Economic Behavior 3 Statalist Output 4 References MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 3/21 Introduction Short Quote Butallthatsaid,Statalistwhenitworksasintendedisfree,fast, friendly(modulomarginalgrumping),clearandcorrect,sowho’s grumbling? (FamousStatalistmember,7/20/2009) MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 4/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21 Introduction (Fun) Facts about Statalist As of June 2009: 3,281 members ⊳ 1,667 Statalist proper ⊳ 1,614 Digest May mask huge dynamics 1,080 posts on average per month over period Jan 2007 - May 2009 Posts first months of 2009: ⊳ January: 1,169 ⊳ February: 1,275 ⊳ March: 1,624 ⊳ April: 1,398 ⊳ May: 923 Monthly averages over years 2005-2009: 947, 1,017, 1,045, 1,275, 1,277 MartinWeiss (UniversityofTuebingen) EconomicsofStatalistExchanges Washington,DC,2009 5/21