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Last 30 days2026-09-18 – 2026-10-17 · UTC
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Only valid, neutral comparisons decided inside the selected UTC dates count. Skips, referral votes and invalidated votes do not count. Every submitted vote selects one project.
Each project keeps a separate persistent rating in Idea, Building and Live, including across versions. Qualification reflects accumulated valid comparison evidence. Provisional projects stay below qualified projects.
All time uses weighted Glicko-2: beating a stronger opponent counts more, and uncertainty reduces as evidence accumulates. The ranking score is rating minus twice its uncertainty. Other periods show net rating points gained and lost within the selected dates; the persistent rating never resets. Moving from Idea to Building or Building to Live carries over the previous rating, with high uncertainty and fresh provisional qualification. Equal ranking scores use a stable project identifier.
Vote weight: choice only 1.0×, with tags 1.3×, with tags and a comment 1.5×. More tags or a longer comment add no further bonus. After 30 days without a valid comparison, ratings above 1,500 ease toward that baseline by 1 point per day (2 in Building), capped at 200 per idle stretch. Payment never boosts rank.
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