Be careful though as sometimes once an app leaves the store and you need to redownload one you won't be able to cause well its not there anymore. I had to reset my phone and it bricked got a new one and some games I had through Nokia collection were no longer available so I couldn't download them again. Sucks big time.
Can someone tell me how to reinstall all apps that were deleted? I don't want to search each of them in the Marketplace.
WIndowsphone.com>logon>Purchace history - This will show all your apps that you have installed and paid for, you can just select to reinstall on that screen.