BlueHost just announced some major upgrades to their already fine service.
First, they did a massive bandwidth upgrade that should make bandwidth-related things MUCH faster. Although there are still uploading/downloading limitations in place they are 200-500% higher now than they were a few days ago and data transfer is faster.
Secondly, to help fight spam, BlueHost implemented a set of blacklists that blocks upwards of 45% of ALL email received.
Lastly, they've introduced service called Bluehost Antispam for $1.99 per domain per month for unlimited email to that domain. You can choose what you would like to do with the spam including marking the subject in the emails as spam, forwarding all spam to a special “junk mail” email address or having it deleted on the spot.
Look for more announcements next week about BlueHost's new monitoring service that will give you instant access to information about the servers and network environment.