Aesthetically, this isn’t without its charm, and we all know how anal Google can be regarding the minimalist design of its homepage.
Yet, the fact remains that in Google.com’s natural state, the link is invisible. A user can visit the site, simply start typing search terms, and click return to view the results. Thereby, preserving Google’s minimalist aesthetics, and keeping the links tucked out of view. That might be cool web design, but it is poor privacy compliance.