The Second-revert rule (or SRR) is an official policy which applies to all users. The policy states that an editor must not perform more than 2 reversions on a single My English Wiki article within 24 hours of their first reversion. (This does not apply to self-reverts or correction of simple vandalism). This does not imply that reverting two times or less is acceptable. In excessive cases, people can be blocked for edit warring or disruption even if they do not revert more than three times per day. Basically, just don't create unnecessary edit wars, just discuss them with the user.