Has Tom Wilson tried "TellAFuckingJoke.com?" Seriously, there is no joke in that panel. I mean, Ziggy was always full of bad jokes, but at least they were attempts. This is just...I don't even know what to categorize that as. Man. Pure awful.
I'd say as long as it wasn't a porn site, I'd feel ok making a reference to it. Cybersquatters seem to have every possible domain name taken, so it's hard to pull a 555-1234 when it comes it a domain name.
I never get too caught up on the whole debate of if the Hulk kills or not. The more you think about it, the harder it is to believe. I doubt the Hulk calculated anything when he was in the mindless, separated from Banner stage.