I think it would be an interesting case study. To be honest I'm surprised that you haven't already done it.

As a private individual I'm sticking with the site as I have done as I've moved jobs throughout my career.

As a corporate individual I'd need to make sure that emails still get through and that the site wouldn't get blocked.

In terms of moving to the cloud I'm not worried about it per se I'm just in the mindset where a small system will fit on my existing tin without bothering core activity then why bother moving it? If it were a case of it consuming internal resources (CPU, RAM, IO) that could best be used for core business activity then I could see a case for it.

Would you be talking about using SQL Azure or SQL Server in the Azure cloud?