[pototo666]

In a world with too many safe nets, deliver negative results as a service might actually be useful :)

[elseweather]

This is, in fact, an existing product category: the one I'm most familiar with is https://www.beeminder.com/, but it's got a few competitors.

I've never found it particularly useful, but then I'm also too chicken to put up serious cash. I figure I put a high price on having to be disciplined :)