The [AnalyzerActionsAndReporters] section in abrt.conf specifies which plugins are to be used to report crash data. As of version 1.0.0, the default abrt.conf contains:

[ AnalyzerActionsAndReporters ]
    Kerneloops = KerneloopsReporter
    CCpp = Bugzilla, Logger
    Python = Bugzilla, Logger

These lines indicate that kernel oopses are to be reported to the kerneloops.org site, and that both binary crashes and python crashes are to be reported to Bugzilla and to a local text file. Each of these destinations' details can be specified in the corresponding plugins/*.conf file. For example, plugins/Bugzilla.conf specifies which Bugzilla URL to use (set to https://bugzilla.redhat.com/ by default), the user's login name, password for logging in to the Bugzilla site, etc.