The traffic from Live.com and MSN.com are bigger than the others mentioned cnn.com, digg.com, and twitter.com. But the claim that bing.com is already bigger than these implies that since its launch, people now voluntarily go to bing.com — which they would normally have to do when a brand new site launches — e.g. WolframAlpha.com.

But in this case, users do not voluntarily go there. Microsoft is redirecting all traffic there, including even desktop search (how unsavory). Some users may even be surprised when they notice the URL automatically changed from live.com (which they typed) to bing.com (which they did not type).

So the MYTH of bing being bigger than those 3 sites shortly after launch because people like it enough to voluntarily go there is BUSTED. BUSTED. BUSTED.

and P.S. there will be no “upclimb” from any “new starting point.”

Bing resides on top of msn.search.com and live.search.com robots, spidering the net. You will still not see a “bing.com” search engine coming into a website, the old spiders still at work.
By the looks of it, msn and live WERE larger than the others noted, so they just rolled it into bing.

Just standard marketing hype, as usual, but not really a BUST here is it?. the graph will reverse itself soon. The upclimb from the new starting point will be the truth.

It’s the same thing quantcast does – it provides ratings per website or per “network” to “quantize” or monetize a web holding by rolling traffic together across sites.