>>8 >>9
It would take a minor miracle for any image board to become as popular and fast-moving as 4chan's /b/.

And why on earth would you bookmark threads on /b/ when tabbed browsing is available? Leave browsing for the main window and open threads in tabs. Then just hit the back button if things move so fast your reply is off the front page. With the excellent plugin Tab Mix Plus you can even close Firefox and open it again with all the tabs still there.