The answer is yes. But wait, there's more. There's not one, but two ways your voice can be heard.
1) Comment on the posted stories and the entire HD audience will see you username in the left column.
2) Don't want to be tied down to the lame topic the HD editor has chosen for the day. Head to the forum and get the word out. Once again you'll feed into the left column front page.
Mainly, getting into the action will help things stay fresh on site and it's going to be a great year to get in the mix. The forum is a little basic right now, but we are expecting upgrades. Get in early.