The ATLAS experiment at the LHC (CERN) comprises a large and geographically distributed community of about three thousand scientists from all over the world. A shift crew of about 10 people running the experiment 24/7 supervises the data taking. Information concerning the experiment operation and behavior has to be reported and shared with the whole community. To provide such functionality, a logbook facility, known as ELisA, has been developed to offer a user-friendly web interface to browse activity logs and an effective way for shifters and experts to report on system operations.