I just put together a small feature to help out people that may have written a not so great review and collected a bunch of non-helpful votes and then updated it to make it better.
After updates now, your reviews are eligible for a revote by people that have previously voted on them. Those voters will see the question "Did you find this updated review helpful?".
There won't be any kind of voter notification since I think that might be a bit annoying if you constantly get emails/pm's regarding updated reviews. But if you're browsing the reviews of a course again, at least the opportunity is there for you to update your vote.
After updates now, your reviews are eligible for a revote by people that have previously voted on them. Those voters will see the question "Did you find this updated review helpful?".
There won't be any kind of voter notification since I think that might be a bit annoying if you constantly get emails/pm's regarding updated reviews. But if you're browsing the reviews of a course again, at least the opportunity is there for you to update your vote.