A really good friend of mine (the one that got me into this business) advised me to use the "internet marketing" line too.
To be quite honest, I found that makes the most sense because mainstream people don't really understand the jist of what we do. They have these pre-conceived notions we're shacked up in our "darkrooms" gripping ourselves and occassionally cranking out filth and perversion.
I usually tell them that Perversion is Cleo's department.
Seriously though, it doesn't matter who thinks what. I have about as much respect for garbage collectors as I do for politicians and adult webmasters.
Nobody is in position to judge anyone for that matter.