Realistically, the platform itself should show these (imdb, rottentomat and metacritic). Instead they show some personalized likeness metric that never works.
In nearly 30 years of computing experience, one thing I've learned is the guys who make the platform never capture all the little details of what you'd like that platform to do.
IMO iPhones never really shined until they opened it up to 3rd party developers and built an ecosystem of developers around the app store.
One thing I love[d] about Windows was how deeply you could tailor the experience (through hooks, DLL injection, etc). Haven't played with Linux as much but love the concept that you can overhaul the whole source code to taste.
GreaseMonkey is analogous for the web.
I hope this concept isn't lost as corporations wrest control of both sides of the user experience (browser and services).
I don't think so - you'll end up with a situation where the platform gets to decide which rating service is important and which isn't. Most people might not want pluggedin(christian-value friendly rating) ratings, but it might be the #1 rating source for some.
A better method would be to embed a unique id for the movie in a rating s widget, and let the user configure in their user agent which services they would like to query for ratings.
