I'm sorry and disappointed to hear this! I've always enjoyed reading your informative posts, tips, pointers and other information. You will be missed (at least by me).
I'm still considering upgrading to the HobbyCNC PRO kit but I will be EXTREMELY reluctant to join the HobbyCNC Yahoo! support group (or any other Yahoo! group for that matter). Been there, done that and really, really, really didn't like it, at all. I joined a few other Yahoo! like groups in the past and didn't like them, equally as much. From now on I do what Nancy Reagan taught me, I "just say NO"!
I understand why you're doing it, but, I wish you'd reconsider. Any thoughts of starting a forum of your own, similar to this one, on HobbyCNC's web site? Now that, I would go for. As long as it's as far away from Yahoo! as possible.
Just my 2 bits. Keep up the good work and be sure to come visit from time to time.