A software engineer has been keeping nearly 7,500 Firefox tabs open on her Mac computer for over two years—and doesn't plan on closing them anytime soon.The Firefox power user, who goes by the pseudonym "Hazel" online, posted a screenshot showing 7,470 tabs open earlier this week after finding the browser initially unable to restore all the tabs. Hazel was able to bring the tabs back to life via a Firefox profile cache, however, and tells PCMag that reloading the full session took "no more than ...