smofsweb@bostonbaden.com
And, be prepared to create a plain-ascii-text version of the form that has everything in about the right place. This was something I asked permission for, and was told "no, it's got to match the form exactly" in January... but by July, the hotel res people were happy just to get pieces of paper with all the necessary information on it. Being able to include the plain text in an e-mail message to folks was Very Handy.
I think one of the more, ahem, interesting aspects of running a website for the Worldcon is that the rules change over time. I honestly don't think it's a matter of people simply changing their mind; I think it might not have been appropriate to have reservation forms without our logo on them in January, but when the convention is a month or so away and a bigger chunk of the con-vis bureau's calls are about us, it makes more sense in July.