That's strange... could someone confirm? I would be very disappointed if that was true and not widely known. On the other hand, I didn't have any problems with submitting that link: http://news.ycombinator.com/item?id=3146239
"The great majority are banned for spamming and/or voting rings. Others (like url shortening services, squidoo, etc) are banned because they're often used by spammers. Others are banned for the reasons I listed in that recent essay: linkjacking, being offtopic, or characteristically being fluff."
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