If you’re a developer, you must have heard about Stack Overflow. Certainly, you also have pieces of code in your projects that have been copied from the answers you found there. 🙂 I’m no exception – I have used Stack Overflow for a long time. 3 years ago I even created an account, but it was practically inactive (a new user with no reputation cannot do much). But a year ago I become to be more active there. What is the effect of the year on Stack Overflow?