Google is now suggesting actual search results for people to link to while they're creating documents and slides in Google Drive.
Google has already had a feature that lets you find results to link to, but now it's adding the power of suggestion.
The company explains in a Google+ post:
You can hyperlink text in Docs and Slides when you want to attach related information to a word or sentence -- for example, when writing a paper on Athens, you can highlight “Acropolis” and link it to a Google search result, a specific website, a heading or bookmark in your document, or even another file in Drive.
Starting today, the link tool now offers you suggestions based on the text you are hyperlinking just in case you don’t have the URL you need offhand. To try it out, select the text you want and click the “Insert link” icon from the menu bar (or use Ctrl K).
The top results in this example do appear to be the top organic search results Google shows for a search for "acropolis". Something tells me that WIkipedia is going to start getting a lot of links in documents.