E-mail address to use in publications
Personally, I think that (in academia) sticking to official e-mail addresses is an atavism.

Currently, one's personal e-mail (say, ...@gmail.com) is better because:


usually more efficient/stable/etc,
lasts for longer than 1-4 years.


While names like mad_theoretican_666@... may sound ridiculous for professional communications (but it's rather a matter of taste than anything else), I don't see anything wrong with e-mails like name.surname@ or n.surname@.

However, I heard quite a few times that non-institutional e-mails sounds less serious. 

But honestly, if someone builds his/her value depending on how his/her e-mail sounds (and doing it against very practical reasons), it is the thing that is ridiculous.