From MozillaZine Knowledge Base
Firefox 2.0 introduces Microsummaries for bookmarks — a way to extract a bit of information from a web page and display it in the bookmark’s title. When the service tries to update a microsummary, this preference determines how long to wait for a response until the connection is cancelled.
Possible values and their effects
A positive integer determining the number of seconds to wait until cancelling microsummary loads that take too long. Default value is 300.
First checked in
Has an effect in