How do I install, update, and remove apps for multiple devices in the Google Play online store?
Unfortunately Google play Web app doesn't allow you to the following things:


Update your current apps (It can only be done from your devices)
See a list of apps install in a specific devices (It only tallies all of the apps you ever downloaded into one list)
Remove any devices which were previously added to your Google account


Hopefully we can raise awareness through this question so that Google finds that enough people will like a lot more functionality from the web app. It is sometimes very functional specially if you work in a computer all day.