A question on SO.com seems to have had its text edited by a user with 1 reputation. What's going on?
The user has a lot more rep, but was subsequently suspended until next year so his rep has been artificially set to 1. If you're really interested in what happened, you can find a lot more info about him here on MSO.
Note that this can also happen if the user has enough rep at the time of editing, but is severely downvoted.