I'm a Yahoo Messenger addict and I use it extensively with Pidgin on Debian. Unfortunately I moved to a place where I have to share a privately operated network connection with a lot of people I'm not really familiar with.
Without having details about the network architecture I think it would be really easy to monitor network traffic here.
I use https connections for all my mails, university stuff and social networks, so I'm not too afraid about those sites.
However it is a nightmare of mine that someone could read my private IM conversations and I didn't find any information about how the Yahoo Messenger is implemented on Pidgin and if my conversations are encrypted.
Can anyone help how to find out?