I guess inappropriate would work for me.

I was online last night, trying to pick domain names for a new site.  Every single thing I pick?  Taken.  What blows about that - is - that most sites are just stashed away and unused.  Back when I snagged MM, MM dot com was squirreled away, and it still is.  Boo. 

Of course everything silly inappropriate or slightly offensive that I pick because I like the sound of it - is available.  Everything appropriate is long gone.

In the end, I chose a name that is a mix of appropriate and silly.