If I was you... I would be working things out with Bluehost.
In my opinion they are one of the best hosts around.
I got pulled up by them for using too many server resources a while ago (CPU usage). When I went and had a look at some of my websites they were very slow to load. You will find that a lot of third party widgets on your site can cause this problem. Some of those Amazon widgets (especially the tags widget) etc. can use up a lot of your hosts CPU resources.

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