This plugin (try) to get the hostname of the visitor and write it into the log_visitor table.
There are currently no reports or any views available, to see a result. You need to directly query the table! I currently dont have the time and need of such a view, and therefor maybe you'll never see one...if nobody else create oen :-)
NOTE: I use it currently only in an intranet enviroment to detect computers which have old enviroment, because the IP might change i log the hostname.
I never tried it and probably wont use it for internet...