Jane_Doe - 7:04 am on May 19, 2010 (gmt 0)
I don't do any relationship building to get links, calling or emailing. Most, though not all, of my older sites seem to keep or improve their rankings over time with unsolicited links.
For new sites and older sites that have dropped in rankings I just do routine stuff - directory listings, blog posts, article writing, etc. and that usually works out pretty good.