You attempted to reach ureddit.com, but instead you actually reached a server identifying itself as http://ureddit.com. This may be caused by a misconfiguration on the server or by something more serious. An attacker on your network could be trying to get you to visit a fake (and potentially harmful) version of ureddit.com.
You should not proceed, especially if you have never seen this warning before for this site.
You should not proceed, especially if you have never seen this warning before for this site.