> 1) Would you walk up to a group of strangers at a social event and, without introducing yourself or getting to know anything about them, launch into a long and incoherent rant on a topic of your own choosing?

Yes, most definately, I've done it many times =P
>
> 2) Would you barge into an existing conversation and start talking loudly about a completely different topic?

Oh, yes... that's the best way to make friends! =P
>
> 3) Are you incapable of identifying the appropriate tone of a conversation you are involved in, and adjusting your manner of speech to suit the company and the situation?

Yep yep yep! =P

> 4) Do you deliberately tell people your deeply held views on matters you know to be controversial, and then get outraged if they turn out to hold different views?

Oh, yes! =P
>
> 5) Do you make no effort to contribute anything to a social group, but still expect the other members to listen to what you say?

Yeah... I'm lazy =P


Okay, now to get serious...

Frankly, the injokes do get a bit irritating, and that makes newbies feel all left out. And no, not all newbies are evil little scummy creatures from the deepest pits of the black lagoon. That appears to be the opinion of some people I know (not anyone here, but just in case...)