Here is a fun/terrible thing! If you search for "iTunes" in Google, the top sponsored result is something called itunes.download-new.com (don't go there), which is nothing but a festering rat king of malware.
As discovered by Whitenoise contributor djublonskopf, this clever and evil ad placement is probably why your relatives' new laptops are suddenly under attack by scores of pop-up ads and other vile, computer-crippling software. Similar searches for popular downloads like Photoshop, Microsoft Word, SimCity, and Winamp (!) showed no similar trickery.