In the link above, you'll see that the page is scrolled down until the quote is centered on the screen, and highlighting is applied.
It would be really fun if it were possible to share these links with friends and foils ;)
We would need an interface to create links like that--perhaps internal search and even G**gle result referrer build an URL with a query param or fragment that causes the text to be highlighted.
These URLs should probably include an oldid to help resolve the reference when the text has been modified.
(I couldn't find the project for MediaWiki-Core-UI... please add if you know)