Another one: You see a way to do things that in theory might work better that what everyone else is doing, but in practice no one seems to use. Do you investigate it and consider exploiting it?

Example: You're trying to get karma on reddit. You notice that http://www.reddit.com/r/randomization/ has almost a million subscribers but no new submissions in the past two months. Do you think "hm, that's weird" and keep looking for a subreddit to submit your link in, or do you think "oh wow, karma feast!"