UPDATE: Notifications v2.0

In addition to email notifications which were added 2 days ago, we will now also have notifications on the website ("on-site" notifications, similar to Facebook, Twitter, etc.). You'll notice a bell icon in the top right corner (if on mobile, you'll need to click the hamburger icon first). The number of unread notifications you have will appear in a red badge over the bell icon (if you don't have any unread notifications, there will be no red badge). Click on the bell to be taken to a list of your notifications.

I know there was demand for both kinds of notifications (email and on-site), so now we have both. I also know that email notifications can be spotty (depending on your email provider, sometimes email notifications get blocked by the spam filter, or take longer to arrive, etc.), so hopefully the addition of on-site notifications is a welcome feature.

EDIT: Real-time notifications have now been added (so you don't have to refresh the page). Due to cached assets, the layout might look a bit weird now (e.g., double search bars at the top, etc.) - you can clear your browser's cache to get rid of this immediately (or just wait a bit and things should sort themselves out).