Shortened link
The link you followed has been shortened with is.gd. Shortened links can go anywhere on the Internet so you shouldn't continue if you got the link from a suspicious source e.g. junk email.
The full original link is shown below. Click the link if you'd like to proceed to the destination shown: -
http://www.google.com/search?q="I've got 5 PCs that I'm trying to use to train disadvantaged young people. The problem is they are riddled with viruses and a firewall blocks me from updating them. "&hl=en&client=firefox-a&rls=com.ubuntu:en-US:official&hs=WEN&filter=0
Tip: some QR readers fail to read mixed case URLs properly. We recommend using the lower case option or a lower case custom URL with QR codes.