while browsing the main page of stack overflow parent site, I noticed this:
However upon going to the question, I could not see anything modified in there. Am I getting blind, or is this some sort of weird bug? Why editing year old question anyway?
The user you see as "Community" is not a real person. It's a background process that helps keep Stack Overflow clean. One of the things it does is to randomly poke old unanswered questions every hour so they get some attention. In the above case, the question is quite old and still there is no accepted answer. Hence, "Community" poked it so it gets some attention.