I hope many of you won't be able to access your yahoo msn ICQ or Jabber messanger because of certain restriction in your college/office/home here is an easy way to access it.Go to a site called http://verticalimits.uni.cc/ it is the best place from where You can access all this chat services free of cost.Now no need to panic about not being in touch with your friends.
we found a way to open Orkut also

http://images.orkut.com

But now its not working in our college.But it will work in yours.hope we will found a way to open it from our coleege also.