We have covered this topic in past when Windows 7 was released by Microsoft:
Has Microsoft Removed Quick Launch Toolbar in Windows 7?
Windows 7 comes with new feature "Pinned items" which has replaced the good old Quick launch toolbar from Windows 7. Although you can get the Quick Launch toolbar back in Windows 7 using this tutorial.
Recently our active reader "Uewd" found out an interesting thing. Microsoft has also mentioned in Windows help why did they remove Quick Launch toolbar in Windows 7.
1. Click on Start ORB (Start button) and type "What Happened" in search box.

2. Click on the link present in Search results or simply press Enter.
3. It'll open a Help window which will tell you the reason behind removal of Quick Launch toolbar from Windows 7.

Interesting find by Uewd...
This article was posted by VG in following section: Windows 7.
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SMBR
It is Advantage or Disadvantage
leomate
Its depend to users too.
I liked new windows 7 pin system with vista thene :D
Darshit Shah
I got the search result.. But on clicking it, I get "No topic found".. instead of the result show in the screenshot above
Tjay
For the french users, it is " Qu’est devenue la barre de lancement rapide ? ".
It depends on user's system language. =)
Patrick
Better on windows 7 than quick launch, its easier to see and can open specific files just by right clicking on the task bar, kewl huh, :D
Rtyh-12
They say that they have removed the Quick Launch toolbar. However, it is there, as you mentioned in your previous post. I actually found this article before and left a comment to Microsoft telling them that it would be better to say that the Quick Launch is actually there. I'm not on a Windows 7 computer though, so I can't check (my guess would be that they simply ignored it, of course).
Paultx
I checked the tip not via the ORB, but via Desktop > F1. I typed "O que aconteceu" (Brazilian Portuguese for "What happened") in the Windows Help search box. It gave me 30 results as the best for the query, including items like Outlook Express, HyperTerminal, Net Watcher, and NetBEUI. And there is more... I think the tip and the news here should be not about the Quick Launch Toolbar, but about this very cool and simple way of asking Windows for information.
wildgoosespeeder
This is one of the reasons I didn't like Windows 7 and went back to Windows XP. I don't see a reason why it was removed but rather only stating it was removed for a "better" feature. Yeah you can get the quick launch back but that is a longer process. Why remove something that wasn't broken? Why all of a sudden is Microsoft removing things in later versions of their OS that worked fine in previous versions? OSs up to XP kept old features for compatibility and not-angering-the-customer reasons. I wouldn't have a problem with this pin feature if it was an addition, not a replacement. Same goes for any other feature.
Rtyh-12
Hello! You do realize that pinning is exactly the same, right? Why would you prefer something that sits neatly on the taskbar, launches your programs in one click, is easily movable with click-and-drag and looks good over something that sits neatly on the taskbar, launches your programs in one click, is easily movable with click-and-drag and looks good?
Kyle
finally!!!!!1111 good job Uwed!
ever since Win7 came out ive been searching across the web for legit reasons y MS removed the QL Bar...