As I still remember the days when Flash ads hung the web browser, I was ever so grateful when multiprocess for plugins came about and I could Flash without killing the web browser.
You know, it's really funny. People keep complaining about things like Flash hanging their browser, or how "slow" Firefox was. I never experienced those problems and I don't understand why or how anyone else did. I mean, there was a good while there that most of my web use was on Newgrounds and Kongregate. If Flash was going to hang my browser, you'd think games and heavy video content would do it - but no, it never did. And Firefox was and is one of the fastest-loading programs on my PC - and I don't use or allow multiprocess to happen.