Creating Zero Size "Apps" to replace real Apps.
This won't prevent the problem from happening, but one approach to limiting App space is to not install apps but to use the browser version instead. What I do for many "apps" (NY Times, for example) is to go to the web site, create a bookmark, save that bookmark to my home page, and use that instead of the real App. You can do this for an incredible number of site-oriented apps -- in many cases the browser "app" is almost as functional as the real App. The storage required is just for the URL and its name -- very minimal.
Another problem I frequently have is having the manually close browser windows (probably because of the above). Go to the browser menu and "click on" windows. Close all the ones you don't need (most, usually).