Awesome. I've gotten my IP banned several times after the browser crashed and I reopened the tabs (I had too many HN threads open prior to crash, enough to trigger the ban)
It speeds up browser startup dramatically. Especially when you leave lots of tabs open as your "to read" list.
Firefox has a better solution for this but then again, I don't use firefox.
I only loaded so many pages because I love HN. :)
The ban was lifted a few days later, not sure if automatically or thanks to my (unresponded) email request.