Something weird happened to me. On the main site (Stack Overflow) I have an account with low reputation points (196) and until two days ago I was able to edit others people questions. So till then I believed that editing questions is allowed no-matter how low is your reputation points.
Suddenly (two days ago) I realized that I couldn't edit questions anymore. "Account is not allowed to suggest edits", is the message appearing when I hover over the edit link now. By searching the site information I saw that editing requries at least 2,000 reputation points.
How was I able to edit the question in the first days?