I would change the title to actually describe what the service does. It has nothing to do with Unicorns other than the fact that its logo is a unicorn.
From what I've seen, HN people don't appreciate marketing copies and you probably won't get enough upvotes you deserve with the product you've built.
Oh, thanks for the tip. I was just trying to have a little fun, but you're right that it's not very descriptive. I'll change it.