The hashtag to be used is #gfree, and Bonnie has lots of information on ways to follow the conversation in her RSVP post, which also has a Mr. Linky where you can put in your Twitter ID to sign up.
There will be three panel discussions throughout the day, with prizes given out during those times. The party is not just about being gluten free, but will include other food allergies and intolerances as well. Some of the topics to be discussed are:
preparing lunches for school
implementing a diet or lifestyle change with the whole family
how to handle birthday parties, school parties, holidays, visiting relatives
how to inform other parents at school if contamination is a life threatening issue
where to get recipes
how to cook from scratch
which sites sell the mixes and other food related products
I was frankly amazed at the amount of information shared during the first twitter party Bonnie hosted, and at how well organized it was, and I am greatly looking forward to this one. Another bonus is getting to connect with other Twitterers who are also dealing with special diets in their lives. So go RSVP today!!