Nothing new...

"it" maybe didn't state it, but many people did and it's repeated by media.

I was surprised at the amount of information they were able to gather from "passive" analysis.  I'm assuming all they used was the block chain. And google?

Anyway after reading it I will take even further steps to protect anonymity.

we have always known that bitcoin is not anonymous. we can see all the transactions, and track the ownership of all coins.

there is no news.

The part of bitcoin that is anonymous is that, in most cases, a bitcoin address can not be attributed to a name unless its published.
In this respect, it is as anonymous as this board. All I would have to do to get a 'new identity' is reset my modem and make a new account (in this metaphor, hitting the 'new address' button).

There are plugins that evade that. If a fresh IP address doesn't cut it, there is tor. Bitcoin can easily be anonymous. Heck, purchase some fake documents from one of the Bitcoin black markets, open a bank account with them and get your Bitcoins with that. You'll be covered all the way down.

This, and if this is to complicated, just send some coins to another wallet through a mixer and if anyone asks, just say somebody you were selling something to gave you the mixer input address as there payment address.

As everybody said the graphs were nice, I finally open the link
They are definitely nice

I also like the graphs. Would be nice if blockexplorer looked like that.

The author of the OP's cited article posted this in his own follow-up comments, and I think it describes whether Bitcoin IS or IS NOT anonymous very well...

"It is possible to use Bitcoin in a way that is almost certainly anonymous, in the same way it is possible to get almost certain anonymity on the Internet, by using encryption, onion routing, and never associating your identity with your actions.

Our point is that you don't get this anonymity automatically, and that most casual users of Bitcoin may not be anonymous, even though many of them may believe they are."

I think people should start using the phrase, "Bitcoin is not automatically anonymous." Indeed, saying that Bitcoin "is anonymous" or "is not anonymous"... both of these statements are untrue and misleading.