I thought that would do it but when you understand how you (I, at least) browse the web this feature became annoying, fast.<p>Working on Nitrous IDE, take a break to read an article (on a page never before visited so not whitelisted). Check the Disqus comments, the article mentions a book on Amazon, check that out....oh no, my IDE page has just gone to sleep, now I have to reconfigure it again. Ah the article page went to sleep too, now I need to find where I am in the comments.<p>Throw in the time for the pages to reload as well, and you can see how this could get frustrating.