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.
Since we're trading anecdotes... When I was around 20, my sister was around 12-13 and was a huge Debbie Gibson fan. She wanted to go see Debbie at the (now RIP) Valley Forge Music Fair, and I got nominated to go with her.