I had known of this new Panorama feature in Firefox 4 from other blogs post titles. When I first saw Panorama, I thought that was Panoramio. I was wondering why Mozilla introduced Panoramio, then I read the title again and I did.

I totally forgot it when I just installed Firefox 4. I accidentally brought it up by pressing Ctrl+Space unawarely.

http://i.imgur.com/UQ94Ah.jpg

I thought What the heck just happened? then I was trying every key combinations I could think of to get back to normal browsing mode. I finally got it after I watched the introduction clip of Panorama.

https://i.ytimg.com/vi/5r0TQJ-gGi0/hqdefault.jpg

Just press Ctrl+Space again or click on thumbnail. I have no idea why I didnt try to click at first place.

Anyway, its a cool feature. You create some groups, organize them. They will even get together again next time you open them. Ctrl+Space allows you to cycle them over group by group, tab by tab. But its not a useful feature for me, I rarely would open tabs more than five. The screenshot above took me opening half of my bookmarks (liar!), I know some people are tabmanic or tabholics, Panorama must be their thing.

There is one more thing I want to mention, its the memory usage of these 16 tabs. Firefox only used less than 300 MB, I would bet its kind of improvement, though I had never known how much memory it takes for 16 tabs in previous tabs.