Current
Webmaster Guidelines [google.com]
They no longer contain two lines:
- Have other relevant sites link to yours.
- Submit your site to relevant directories such as the Open
Directory Project and Yahoo!, as well as to other industry-specific
expert sites.
The initial reaction from sharp-eyed observers was "Are links no longer required?"
A Google employee has responded, making two points (paraphrased):
- Google should not be naming specific directories. If a directory brings you quality traffic, go fot it.
- The wording suggested that one should "make" i.e. force other sites to link to ours. You should make it easy for others to link to you.
Google Groups thread. [groups.google.com]