I don't know if it is the same thing that you are alluding to, but LIDAR can be used to measure distant wind speeds. I don't know if the output would be suitable for shooting, but it has been used in sailing.
To me, the obvious follow-up would be social anxiety because it is intrinsically hard to talk to other people about, yet discussing it with a computer doesn't pose any difficulty. (I'm currently reading a 'use CBT to cure social anxiety' book which has been rather eye-opening.)
Regardless, I like the site, though it sometimes gets a bit choppy on my old macbook pro. I think £50 might be a bit steep as an up-front cost - it almost put me off.
Also, have you considered doing an iphone app for the diary? I use some supposedly motion sensing app to wake me up with music. It doesn't work very well, but for your purposes I could easily see just thumping the phone when I notice I'm awake instead of having to look at a clock and remember a time.
The thing that jumps out at me is your first question: the majority of the actions I get from e-mail come in the text of the email and are external to the mail client (implement this feature, fix this bug) rather than part of it (reply with an answer, accept meeting request).
I think the reason why email works for this is that somehow email "comes to me" whereas everything else I have to consciously "go to it" to check it. I recognise that some of this is habit, some of it is how the email client is integrated into the computer (outlook at work, mail on my iphone) so that it presents new stuff to me directly, and some of it is that it presents a single place to check rather than having to hit refresh on a bunch of webpages to see if anything has changed on each.
It seems to me that you have introduced an unnecessary third party to the problem (the agent) that holds the same power and position as the current problem party in the copyright arena (the publisher/label). The interesting development in recent years has been the removal of this party from the equation (self-pub ebooks, kickstarter etc.) so it would be a shame to bring it back.
I would solve that by either not allowing exclusive contracts (so a contract is only for a specific performance) or by limiting all contracts to a maximum of one year.
I would also legislate that all agents get the same percent of the donations as fees. Not sure how much, but under %25. By not having to negotiate this part of the contact agents would be motived to compete on quality - things like how often they would advertise, how good the venues they could get, etc.
Alternatively, how much of the stats were the same machines failing repeatedly until they found stable settings?
[Anecdote] If my brief experience is anything to go by, overclocking involves lots of crashes until you get it right. Once it is working I would expect no more failures than a shop-bought PC, but by that point the statistics are already skewed by all those crashes that I don't care about.
In addition to dictating our choice of failure types, our use of crash logs has two additional consequences. First, we observe only failures that cause system crashes, and not a broader class of failures that includes application crashes or non-crash errors. Second, we cannot observe failures due to permanent faults, since a machine with a permanent, crash-inducing fault would be unable to recover to produce, record, and transmit a crash log.
They only include systems that have had a hard crash or a stop error.
I would have guessed the opposite - I would expect the least significant bits to have a random distribution (if the image is a photo from a camera, that is) so if the least significant bits of the image have a non random distribution that might be a hint that there is something hidden there.
Of course, all of this is moot if the image is lossily compressed.
Finding drops for the AH isn't as powerful a reward loop (at least pre-inferno) because whether you get a reward or not is at the whim of other players, and because your reward (or failure) is delayed by up to 48 hours. This may be different in the end-game (I didn't get addicted enough to get there) but during levelling it is quite weak.
I think there's definitely something to your second point though. Are we less prone to addiction, or more likely to recognise it and choose to break the loop?