There are "Submit to Hubski" buttons, but you can't integrate those with WordPress. Here is how to add a "Submit to Hubski" button to your WordPress-powered site!

1. Go to your admin panel > Settings > Sharing

2. Scroll down to "Sharing Buttons" and click "Add a new service"

3.

- Set "Service name" to "Hubski"

- Set "Sharing URL" to "http://hubski.com/submitlink?u=%post_url%&t=%post_title%"

- Set "Icon URL" to "http://i.imgur.com/Xy3vhWZ.png"

4. Click "Create share button" and drag the button to your enabled services.

Save your changes. Ta-dah!

It doesn't work with the "Official" button style though, unfortunately.