SilverBullet is an awesome piece of software. I still run it, and used to use it quite a bit a year or so ago. I've mostly switched to pen-and-paper, but if you have some spare time and want a simple, customizable note taking app, I highly suggest trying it out. I will say, don't skip the tutorial; it's pretty helpful.

This looks cool however how the app loads is a major issue.

I get a first paint that seems like its loaded then the page reloads. Sometimes it fails all together.

This might seem like not a big deal but speed and a well built frontend is absolutely key if you want more users for a note taking app.

Back when this was first announced it was pretty neat, but I don't think it passes the long term reliability test for me. Last time I tried it I somehow managed to erase all the notes and the site broke - didn't exactly instil much confidence.