It's a miracle place where you can see your voting power, your rewards, and get a feed of posts you might want to upvote. you can get to them quickly for upvoting purposes. You refresh the screen all day to see what's new in the 30 seconds since you last looked.
If steemnow goes down - you get a screen with no numbers that might come back or not. There is no replacement for this service so you get a huge huge pit in your stomach and feel sick and check constantly until it comes back.