[j_baker]

Whether it is or isn't appropriate is the topic of a separate discussion altogether. That would have to touch upon personal and community etiquette, professionalism, audience, and so forth.

You don't think that's important? If you had put a lot of time into this presentation, were proud of it, and submitted it to Hacker News to share it with others (without realizing that some people would take the profanity as a linkbait attempt), wouldn't you be at least a bit upset if someone said:

"Why do you people keep linkbaiting by putting profanity in the title?"

If it were me, I'd probably tune them out and their (valid) complaints would go unheeded. But if someone said something like:

"That was a great presentation! I think it would be even better if you excluded the profanity though. To be honest, it's a bit offensive. But that's just me. What do you think?"

...then I'd be more likely to listen, and might change the title just because I couldn't fathom offending someone so nice. Wouldn't you?