Many answers are going to be workarounds. As web apps improve and solve these issues the workarounds break. Even official answers may change drastically over short periods of time with some web apps.
How do we handle this sort of change?
I know on many Stack Exchange apps, the best answers are timeless, but it seems hard to give timeless answers for web apps.
Can moderators mark questions as "unanswered" if they notice a solution that previously worked no longer does?