This product is still in beta phase at the time this article was written, so these things should improve soon. This feature works now, but unlike the Windows version, there is no way to turn it off in the beta Linux version. McNair indicated this would be fixed in the next beta revision. The lack of ability to execute a file transfer is a big difference between this product and other IM clients, and it is next on the list of features to add to Messenger. Perhaps the biggest drawback to this application for Linux users is the need to already be a member of an IM service in order to use it.
Messenger does give users a reason to start using other services, however.