How can one promote his website without being obnoxious?

MIQ-TEST is a website that tests your intelligence and rewards you for it.

How it works:

1. You go to the website : https://steem-miq-test.herokuapp.com/ and, for free, answer questions.
2. After answering all the questions, you click on the "Submit" button and via SteemConnect you will post, to one of my posts, encrypted answers that you gave.
3. Wait for the maximum of 12 hours to get paid if you won.

There's only one rule: "Winner takes it all." - The first one to answer correctly the highest number of questions - wins.

I think this is a valuable website for the steemit community. So how do I promote it ?