RSS TTL and skipHours

This tag gathers PostRSS technical explainers on the RSS 2.0 specification's optional ttl, skipHours, and skipDays channel tags, which were originally designed to let publishers suggest how often a feed should be re-checked. These articles explain why most modern RSS-to-social automation tools use their own polling logic instead of honoring these legacy tags, and what actually determines how quickly new content gets discovered and distributed today. In practice PostRSS checks every 5 minutes on all plans and every minute on Enterprise, regardless of what a feed suggests. Publishers occasionally set these tags hoping to reduce load, which is better handled with cache headers and conditional requests. The related feed performance tag covers that mechanism.