I'll find this site useful and keep using even one month later.

Created by spacemammoth on 2014-08-02; known on 2014-09-02; judged right by spacemammoth on 2014-09-03.

• spacemammoth estimated 72% on 2014-08-02
• booradleytron estimated 100% on 2014-08-04
• TeMPOraL estimated 30% on 2014-08-14
• spacemammoth   judged this prediction right on 2014-09-03.