Well, it sounds good, but I think they offer free .com domain only for those sites which have more than 1000 visits per day. But still they have free hosting plans with many features, but I wonder what they mean by the following stuffs:

Unlimited Tier-1 Traffic
Safe mode off
US Datacenter: optimal position to offer connectivity to the world
1000Mbps connectivity
Sendmail enabled
Hosting on clustered servers