The point of using incognito is to be unauthenticated. Otherwise, wouldn't the post always be visible to the submitter, regardless of whether or not it is in the spam filter?
The post will show up for the submitter on their userpage and in their submitted links panel, however it will not show up in the new queue, not even for mods. This may be different for shadowbanned users, but I don't think it is.
Actually, I'm almost certain it's the same for shadowbanned users, because we got two modmail messages today from shadowbanned users asking to have their posts taken out of the spam filter because they can't see them in the new queue.
This would only be effective if you know that a leak is going to occur. Otherwise, this wouldn't mitigate any specific leak as it is unknown when the leak would occur.
However, a strategy that could worsen the effectiveness of Wikileaks would be to constantly spam them with large amounts of plausibly authentic fake documents. Maybe I'm missing something but this seems like such an easy way to tie up the resources of Wikileaks that you'd have to wonder why these governments and corporations aren't already doing this.
Ok, so demos are great to have. As a person in charge of hiring, what kind of demos would you like to see in a candidate? What kind of portfolio should a person without demos try to develop for the purpose of trying to get a job?
It depends on the job. I'm hiring web devs at the moment so cool functioning sites are great(but rare). I'm certain a few little games I wrote in javascript(blackjack, and copies of a few of the games from kde games) got me my first job in web development. The CTO loved the blackjack game in particular.
I guess the best advice would just be anything interesting that shows off your skills.