Hosting for festivals?

I'll host you for the Boston festival, can you host me for any of the major US/Canada festivals?

In an effort to lower the damage tango inflicts on my finances, I'm looking for people who are willing to host me (and potentially my girlfriend) during 2007 festivals in exchange for me hosting them for the Boston/Providence festivals. Anyone? I should say that as far as sleeping arrangements go, I only need enough space on a floor to put an air mattress (which I can bring with me). I'm well known in the Boston/Providence tango community, I can provide references upon request.

I live 15min drive south of the Boston, 30 north of providence, a 5 minute drive to the Boston's subway red line (which goes to MIT where I suspect the June festival will be held). But since I'll be attending all local festivals, you would definitely get rides to/from all milongas and potentially some workshops.

Anyone?