Well I'll be buggered. I've downloaded and installed the new release of Firefox and the tabbed browsing has been altered in such a way that the close button is on the tab itself and not over in the corner where I expect it to be. Apple's Safari browser has operated that way and I rather liked the way Firefox used to do it. But I'm not such an old BlogDog that I can't learn new tricks. There is a clever little drop-down arrow where the close button used to be that allows navigation among tabs. That could be useful.
Also spelling is being flagged as I type in Blogger. That may be a Blogger upgrade but I appreciate it. I'm an OK speller but a lousy tupiat ... typist. Sorry.
UPDATE: With Firefox, all things are (at least seem to be) possible. Here is a page with all sorts of tweaks to this most excellent browser. I've already changed my tab close button to its old familiar place on the right side of the tab bar.