It's wise to backup your bookmarks in any browser, even if there's a SYNC option that stores them online. You may have to hunt around in Tools or Options to find something like Export Bookmarks. In Firefox, you can save them to a file as HTML (which other browsers can read) and store that file anywhere.
Our good friend Redneck learned that lesson the hard way a few years ago when he says Firefox dumped all of his.
I'm going to hold on to FF for a while until I see if they actually take any action or if the CEO's comments were just bluster - and they realize what losing a huge chunk of their user base would mean. But I do keep at least one other browser loaded and current anyway, just in case my FF takes a dump. There's no problem with having as many browsers on your machine as you like.
