As the attack started by Mydoom is a simple overload-the-website attack, it should have very little effects to the rest of the net. This simply is an extreme case of "slashdotting", where a site gets suddenly its traffic increased massively, overloading the server. And it will continue until 12th of February, as the worm has been programmed to stop its operations then.
Another site that is monitoring the attack can be found from Keynote Systems.
