And my final sentence of the "Welcome to Barnacles" post included a request for votes on YC News, though I didn't screenshot before I reworded that. I honestly had no idea of the rule here, so I've removed it. If there's flags, penalties, or removal I earned it. Nothing more to be done.
Seemed like an honest mistake. It's a little unfair to the other submissions, but I mostly wanted to warn you guys that HN does attempt to detect vote manipulation and removes posts (and the moderators will manually do it if they notice).
:( C'mon, aside from being uncool, doing this is likely to get the post automatically removed from the front page.