Sure, when you think of ETNA, it’s the volcano that comes to mind, but that’s the old ETNA. The new one is the East Toronto Neighbourhood Association, inspired by the successes of Beach Hill. The ETNA website even itemizes some of the things the BHNA got done, just by organizing a bit.
One of my first impressions of Toronto, when I came here in the 70s, was that it is a city of neighbourhoods (with nondescript patches in between). Looks like it’s truer than ever, but the nondescript parts are shrinking.