I don't think this has as much to do about porn, than about being able to explain what you do by linking to a known entity. To create a powerful elevator pitch

I don't think this has as much to do about porn, than about being able to explain what you do by linking to a known entity. To create a powerful elevator pitch you try pack as much meaning/punch into every word you utter. The semantics of the word 'Facebook', for example, conjure up networking, friends, messaging, profiles. Now, how successful this kind of marketing/branding is I cannot tell you in numbers. Anecdotally, though, I can say I prefer people get right to the point. So, if the app can be compared to something I already know, then please don't wrap it in bullshit and just tell me.