One website that might be useful to you guys is Eventful to gauge where you guys might want to go next. One of my favorite artists,Jonathan Coulton, used this quite successfully, and I really liked the ability to point friends to a website to say "hey, if you want [whoever] to do a show here, go here to let them know."

I think you're doing an excellent job with the facebook page. Also look into Twitter, if you haven't already.

Anyway, my wife, my kids and I all love your music, and we hope to see you somewhere near Houston Texas sometime in the not too distant future!