You can dominate the results in Google for certain search terms. Yea you can. I currently hold links to 5 of the top ten sites listed in google for gourmet coffee blog and flavored coffee blog.
Not all of these results are direct links to my site, many are through social bookmarking sites that my site has been submitted to, article sites that are indexed by google. None the less, if you search google for gourmet coffee blog, your going to find links to my sites coffee blog one way or another for half the top 10 results.
This is called dominating the top in google. When you or your other properties are effectively bumping your competition out of the top ten so that you dominate google for a search term.
Sparky