Today I updated the site to allow for multiple benchmarks on the leaderboard to help give you an idea of where your submissions rank relative to some basic ideas (i.e. submitting the example entry, submitting an entry with all zeros, etc). In addition, each benchmark has a special graphical designation (to stand out) and a brief description of how you can get that benchmark score.
Do you find these benchmarks to be helpful? If so, can you think of additional ones that I should add? I'm definitely not looking for anything that would give away a big discovery of yours, but just some basic techniques to fill a few more spots on the leaderboard.
This question is slightly related to the "Interesting Scores" forum topic, but in this case I'm looking for basic techniques that can be completely described in a sentence or two and are easily reproduceable using a variety of tools (Excel, R, etc.).