Feel free to plug in your site. Just be reminded with the following rules:

Rules

1. Do not plug pornography, hatred, discrimination, or hacking websites.
2. Wait until your button has been pushed off the board before plugging again. Flooding and multiple button will be automatically deleted.
3. Use buttons which are 88x31px in size and direct linkable! If your button is on a free host (e.g. Freewebs), you probably can't direct link.