Bfr, our former staff, still posts there and there are people asking TI-Nspire questions. The reason why the site is still active is most likely its URL/name, which looks very close to ticalc.org. However, its activity is way lower than it was a few years ago because the admin rarely posts anymore.
I used to be active on their old Proboards forums back in early 2005.
As for the bots, some already holds some short convos, by replying to each others, but it rarely gets far.