> Is it just me or is it a cheap way to flood the front page for a bit of karma? It's just you. As soon as somebody determines why HN karma is worth a damn, then it's a problem.
And because of that, "cheap ways to get a bit of karma" matter, because by their definition they are acts of people who are valuing karmic return over quality of submission, resulting in low-quality discussions that appeal to our lowest common denominators, not to our curiosity.
edit:
To take the discussion further... First, I wouldn't neccesarily say that polls are a cheap way to get karma. Is karma meant to be a reward for effort, or for value? Sure, a poll might get more points per minute it took to create than a great blog post or Show HN post, but it doesn't neccesarily mean it was less useful to have on HN. And in comments we don't discriminate, I've seen plenty of extremely-short comments get high upvote numbers.
And finally... while some people may be motivated more by karma than anything else, is this automatically a bad thing? Arguably if a poll (or anything else) gains the user karma, it is (in theory) a sign that what they submitted was good content, and therefore better that somebody submit it to get karma than for nobody to bother at all.