Getting around censorship such as the Great Firewall. I have relatives in China, we visit most years. Without the right VPN (most don't do a good job against the Great Firewall) you lose things like Google (thus your Gmail account), Facebook (no great loss), Dropbox and it's siblings, pretty much any major news site. Last time I was over there I was having some trouble with my VPN (it's always a cat-and-mouse game between the VPNs and the Firewall) and the only search services that worked were Bing (which saw my Chinese location and did a much worse job than normal) and Baidu (which is China-focused and thus did a horrible job of serving up results in English.) Both engines were more likely to cough up a mixed-language page that vaguely matched over an English-only page that would be a much better match. Note that I was using a machine with the language set to English and not one bit of Chinese in the queries.