Why did Google put a nofollow tag on their homepage?
Find an ATM near you is a nofollow link. They own the content on the same domain name. If it is a different domain name then it may make sense as it will pass pagerank, and that it will somehow violate their own terms and conditions. But it is their own domain name, example
Did they put a nofollow tag only so that the webpage does not crawl from that link? Google may crawl their own homepage often and they probably don't want to waste their CPU resources on that link.
I am just curious to know why they are doing it. Am I missing something?