I have read several commenters here on HN that have mentioned having success with mechanical turk style twitter campaigns for generating inbound traffic. I am

I have read several commenters here on HN that have mentioned having success with mechanical turk style twitter campaigns for generating inbound traffic. I am curious how many of the successes out there have utilized this technique, or if it is just too risky (getting labeled as a spammer) if it's done distastefully.