Hi there, your domain clchomer.com will expire on 2013-02-02 and is not currently set to renew. Something to keep in mind is that if you let your domain name expire, there is no guarantee that you'll be able to register it again elsewhere (and someone else can register it and use it for their content). Also, if you let your domain expire, your previous links will stop working (or direct to someone else's content).
You might consider renewing this domain (you can do it under Store > My Upgrades) and then adding a new domain (Store > Domains) and setting it as the primary domain. This way, your blog will show up under the new domain, and the old one will still work.