These are all posts written by different people participating in the same week-long event. That seems more forgiving than multiple company employees upvoting a story about the startup they work for to me.
Although this particular form of astroturf probably has better inside jokes.
Guest posts on a blog during a week-long coding conference for an open-source encrypted communications project aren't different enough for you? Hard to imagine any one of these posts as something other than hacker news.
I'm not going to apologize, but I am going to end this comment thread (or at least my participation in it) here.
If it is indeed true that you are in fact multiple people and have independently submitted articles relating to your (actually pretty cool sounding) event, may I suggest that you coordinate in the future to keep the articles submitted to just a few at a time, and make your comments more substantial.
This would probably stop the accusations of you running an Astroturf campaign.
