Seems like it might be biting off a bit more than they can chew.<p>Given the choice between the service Spamhaus' list provides, and being able to receive mail from what's undoubtedly one of the largest webmail providers in the world (<i>the</i> biggest?), a lot of people are going to can Spamhaus.<p>I'd hope that Google will react by doing something about the spam, but they could much more easily do nothing, put out some recommendation that people stop using Spamhaus, and a lot of people will be forced to do just that (or Spamhaus will blink and un-blacklist Google). They're the 800-pound gorilla in this particular match; Spamhaus isn't a lightweight but I wouldn't put any money on them in that fight.