My answer for Exercise would be "I am trying this hack right now and so the results haven't come in yet" (so I answered "write-in").

I answered "I feel I should try" for lukeprog's algorithm, but it's really more of a "I'll put it on my list of hacks to try at some point, but with low priority as there's a whole bunch of others I should try first".

I like the title too, especially as it gives no information about what the survey is going to be about. (Still might be distorted as people's productivity experiences might correlate with how much time they spend filling in surveys on LW... but not sure there's much that we can do about that)