For the HN crowd passing by, here's why this stuff could be interesting to you.
It's not possible to do extremely small micropayments on bitcoin directly as people use it today. Bitcoin's made a lot of promises around micropayments, but doing it in an economical way has tradeoffs, especially if you're talking about millions to billions of transactions per second. In fact it's not possible to extremely small micropayments on ANY platform. Try sending $0.001 to someone once. It's not possible. The closest you're probably going to get is sending someone an item on Steam (and there's no easy way to price the items). The reason for this is underwriting costs, it's too expensive for Visa to process it since they're assuming some liability. Even Paypal, who ostensibly should be doing this, charges $0.30 for payments for goods and services.
Light
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ning allows for micropayments to actually happen because custody is still pushed to the edges, so you don't have the same kinds of underwriting risk.
This means that something as simple as paying someone $0.001 over the internet one time will become viable this year. The amount of possible business models and use cases could dramatically shift. Users may not know they're using Bitcoin (your application could hide it and abstract it away), but people are getting paid in a way they could not before (even centralized systems did not exist, let alone decentralized ones). Pay-per-click webpages, massive decentralized CDNs, creating API services without a username/password to make onboarding seamless (you paid? you're done!).
We're working on code here: http://github.com/lightningnetwork/lnd
It's MIT licenced and will soon have some pretty simple APIs to use. Of course, since this stuff will be in testing for a little while, make sure you only use small amounts/micropayments initially when it's released.