After you have posted a thread, you have to wait this long before posting a second thread in that same area. There is no similar limit for comments.

MetaFilter - 24 hours
MetaFilter Music - 24 hours
MetaTalk - one week
AskMetafilter - one week
Metafilter Projects - one month
(tags: timeframe meta askme mefi projects fpp ) March 6, 2006 - back to questions