A single anonymous upvote from a stranger is enough to turn a casual browser into a lifelong knowledge contributor.
April 14, 2026
Original Paper
Good Question! The Effect of Positive Feedback on Contributions to Online Public Goods
arXiv · 2604.10360
The Takeaway
Getting a tiny nudge in visibility on a first post increases a user's likelihood of asking more questions by 6% and answering others by nearly 13%. It quantifies how the smallest bits of algorithmic validation are the primary engine for the internet's public knowledge commons.
From the abstract
Online platforms where volunteers answer each other's questions are important sources of knowledge, yet participation is declining. We ran a pre-registered experiment on Stack Overflow, one of the largest Q&A communities for software development (N = 22,856), randomly assigning newly posted questions to receive an anonymous upvote. Within four weeks, treated users were 6.3% more likely to ask another question and 12.9% more likely to answer someone else's question. A second upvote produced no ad