Author here. Thanks so much for the interest! It's funny, I've been hacking away at a major update that I plan to release in the next few days... Was assuming I'd stay under the radar until then. The update adds a ton of features and improves the UI quite a bit ;)

To respond to some of your ideas feedback:

* I do plan to sell the service by some combination of charging to buy the native version and a monthly/yearly fee for the cloud version.

* By offering the native version I hope to assuage any privacy or legacy concerns -- all you data is on your machine (encrypted and backed up however you see fit). You'll even have access to a local API to extract or do whatever you want with it.

* One idea I've had is to offer a cloud version / native version combo. You would sync to the cloud only your bookmarked sites -- all the other indexed pages you visit would stay on the local version. This way you control what gets put up on the servers but can still have access to your links from all your devices. Thoughts?

* I'd also consider open sourcing it (it's built on Meteor and ElasticSearch) but really do need to get paid for my efforts (just had a baby) and am not familiar with all the ins/outs of open source based businesses. I'd love to hear ideas and advice!

* This has turned out to be quite a lot more difficult than I'd thought but I'm real happy with how things are coming along. Two words: ElasticSearch Rocks.

* Very embarrassed about the privacy policy link. Fixed now. ;)