The short version: Tweetup here, 5:30pm until whenever. Look for the guy in the big boots(You'll know them when you see them).
The long version: I was just contacted out of the blue by @ghozali asking about a Christchurch Tweetup. After a little investigation and coming to the conclusion that this person wasn't insane or a spammer I thought I'd follow up on it. I was under the impression that "Tweetup" was a functional site but a quick search proved otherwise.
So, with that in mind I'm resorting to a generic blog post and the use of #hashtags.