Possible Duplicates:
Should we be allowed to edit comments?
Why is the time limit for editing comments only 5 minutes?
I have low rep on onstartups.com, and I tried to edit my comment only to get a message box saying something how I can not edit comment within the first 5 minutes (or after 5 minutes, I forgot). Anyway, my comment is locked in.
What is the reason for this behaviour?
