Jacquie,
@JB, I think "Tropicals" is where you'll have to go for that interest in "air-plants". I don't know what other forum would cover them. Keep in mind, though most people think of air-plants as being only tillandsia, actually all of the epiphytic plants are air-plants, and that includes orchids, bromeliads, and staghorn ferns, among other plants.
I am glad you are seeing activity with the orchids.