AskMetaFilter has no link to its RSS feed, but any reasonable RSS reader should be able to autodiscover it. If your RSS reader sucks, point it [here].
MetaTalk has no RSS feed. MattHaughey does not want to encourage more senseless MetaTalk posts.
This wiki has its own [RSS feed] as well. Unfortunately, due to the recent influx of WikiSpam, the utility of the feed isn't very high since "real" changes are largely obscured by the fallout from spammer vandalism.
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