just as a thaught, maybe Plus! could connect to ftp servers,
in the logs directory field, you enter a ftp location
(like
ftp://yourname@ftp.yourserver.com)
then there is some place to enter the password (maybe as a pop-up dialogue with the option to save password when you open a conversation for the first time)
therefore people who want to use the feature can when they want, yet it wont clog up the messenger plus interface with an extra feature.