… there's nothing on that list that Indietalk is either unique or the leading resource available.
The two things that make IndieTalk unique are:
The quality and patience of the long-term professionals (and highly experienced amateurs) who offer advice and criticism.
The IT moderators keep down the flame wars and other forms of stupid, childish, unprofessional behavior.
I browse and participate on other film sites, but this is "home."