Despite my personal leanings towards new technologies, there are several owners in our complex of 24 units who don't have email or even a computer. So these IT based solutions don't suit everyone.
We use email as much as possible to distribute info to EC members and unit owners in general. Also to communicate with the strata manager (though I'm not sure they always read the contents, given some responses). But there's always someone I have to give printed info – including a new member elected to our EC at last week's AGM.
Noticeboards can be useful and – if well managed – can add to a sense of community in a strata complex. They also give info to tenants about what's going on, so they're not left out of the communication loop.
In an ideal world, I can see how a well maintained website or blog could be useful. But in the world of our units, I know I'd have to act as 'moderator' on any IT-based info forum for owners… and there's simply not the time.