I changed hosts twice in a year, and I intent on doing it agan in the near future. Not that I spend hosts I hate it, but I became dissatisfied with certain aspects of my hosts. And I think it is in my interest to the industry a bit, I do not have all my blogs on a single server, because when a blog fails, they all do.

I am slowly gathering information on how to proceed in a transparent manner. I thought share some links to excellent posts on the way. I write my own, but I do not think it would be better than what was already written.
How do I switch hosting providers without downtime It is a beautiful and concise list of what you should do.
How to hosting companies web without stopping This is a very detailed tutorial. It's good for the blogger who wants to know everything about everything. Like me, you know, is curious to know the secrets behind the tape of data compared to digital data and everything else, lol.
How to Change Web Hosts This time with writing a first-person account. He pause information that is useful, May you will not find in a more technical tutorial.
Overall, the secret of a smooth, non-stop, then you must keep your service to the former host for some time after buying a new account to a new site. The two overlap for some time (2-4 weeks is the recommended time).