Subtle Invasion
The wiki example is an interesting 'invasion' of that Web property, in that it highlights the superiority of the Google search results in finding relevant information quickly, primarily due to format of abstracts and key word weighting, over the native Wiki search.
Try "oil supply world war II" and note how much easier it is to find an article relevant to the subject via Google.
On a side note: why doesn't a search for string 'wikipedia.com' invoke this 'teleportation' feature?
Rocco