Once you submit your post in these forums, you have 10 minutes to edit it. After 10 minutes, you should post a reply with any corrective information.

Why?

The NNTP protocol doesn't support editing of posts and so edits won't transit our gateway unless done before the cron job runs the gateway to sync the messages. Also, editing a post after it has replies could invalidate those replies because the original information changed. Posting a follow up reply with additional/changed information allows any previous reply to stay in context.