BUIEAlumni (The classic)
BUIEAlumni (The Yahoo Version) * This One *
BUIEFriends (The another Yahoo Version)

Addresses:
BUIEAlumni (Official) : http://www.ie.boun.edu.tr/ieweb/alumni/
BUIEAlumni (Informal) : http://groups.yahoo.com/group/BUIE-Alumni
BUIEFriends (The most Informal) : http://groups.yahoo.com/group/BUIE-Friends

Purposes for these lists are the followings:
BUIEAlumni (The classic) : The official list for the department -
Seminer announcements, news from the dept. etc...
BUIEAlumni (The Yahoo Version) : The informal list for the dept - Just
chat among the alumni to know each other better
BUIEFriends (The another Yahoo Version) : The most informal one - More
than chat, "just do it" :-) concept is the dominant phenemonen :-)

So if you want to
.. learn news from dept and not to lose contact with Profs. use only
BUIEAlumni (The Classic)
.. know about alumni in general (who is doing what, where, how) and
share your feelings about daily issues among the IE Alumni use
BUIEAlumni (The Yahoo)
.. interested in over-chatting (if you want to exchange jokes, pics, in
fact everything more than communicating daily/interesting issues) then
join the IE Friends

The estimated traffic for the lists are foreseen to be:
BUIEAlumni (The classic) : upto 5-10 in a month
BUIEAlumni (The Yahoo Version) : upto 5-10 in a week
BUIEFriends (The another Yahoo Version) : upto 5-10 in a day