Due to the transient nature of web application features, many of the answers on WebApps can quickly become outdated.
Example 1 Part of accepted answer no longer applies: How to send email with images (embedded) in Gmail?
Example 2 Still current, but work-around will likely soon be out of date, as it goes against the intended functionality of the app in question: How can I read all answers on Quora without having to register?
I feel like this is a familiar problem when looking for answers online -- you finally find a site with the answer, but it's long since out of date. After enough false positives from the same site, you eventually stop trusting that site's content, or at least prep for some mental overhead whenever you look at answers on those sites.
What to do?
I'm assuming people have thought and talked about this before, so I was surprised to not find anything about it in the FAQs or on Meta.
I'm wondering what the current and ideal approaches are when posted answers just don't cut it anymore.
Do people currently just leave outdated answers alone in hopes that someone else will come along with an updated answer? While not ideal, this can work as long as there isn't an accepted answer (the accepted answer will always be outdated, unless the OP comes back and notices the updates).
Could obviously outdated answers be flagged as outdated, possibly through a similar approach as Reopen Votes?
Is there already something in place to deal with this that I don't know about?