Opportunity: http://www.livejournal.com/users/opportunitygrrl/
Spirit: http://www.livejournal.com/users/spiritrover/
Cassini: http://www.livejournal.com/users/cassini_saturn/
Voyager 1: http://www.livejournal.com/users/voyagerprobe/
Voyager 2: http://www.livejournal.com/users/voyager_at_90au/