I think Google is going down a bad path here. The results are already filled up with google properties. So now I have to beat this and wikipedia. Wikipedia is at the top or 2nd on a lot of terms now. This means that some searches will have the first 6 results filled with 2 results from the main company that makes something and 2 results from each of these dictionaries. But it does mean if you happen to get to the top you won't have competition below you.