Google Search seems to always be adding new features. From measurement conversions to calculator to word definitions, users can get answers to many of their questions without clicking on any results at all.
That's good news for users, but not so for sites who rely on search results for users to click on. One example is getting one's IP address online. There are plenty of services including whoami on this very site that help users with that. Most of these services also provide additional information, but if all the user wants is to know their IP address, a simple Google search for ip will bring up the answer right away.