All you have to do to enter is:
- Click on this link for my contest page.
- Leave a message in the comments on that page.
- If you want to double your chances of winning, write about this blog (or the contest) on your blog, and post a link to your entry in the comments.
Update: It looks like Joost is giving current users unlimited invites now. As of this morning, I still had just two invites left in my account, but if more show up, I promise to send invites to the first ten people to enter the contest.
Please remember to leave a comment on the original post about the contest, not on this post.