Given today’s web development dynamics, I think Web Applications is particularly prone to content decay — there is and will be a large number of closed questions (that were valid at a point in time) due to services being shut down or features changed and/or disabled.
Having said that, I think the questions closed for the above mentioned reason should be archived instead of being deleted altogether, as I find them interesting from a historic perspective. Maybe putting them in a new “historic” category?
What do you think?
P.S.: I’m not referring to out-of-date answersout-of-date answers.