As you know, in the last couple of months we have been working on upgrading the blog. We have got some feedback from the network about needed features to their blog and we added them. If you can, please check the latest upgrade and tell us if it is ok.
I have my own instance running, so it would at least be nice to be able to add the piwik snippet to our ok-at instance. but multisite would be nice too of course.
there are 2 ways how this can be solved:
1: centrally by OKI. add piwik to analyse visitors to the multisite installation and allow every chapter to get access to the piwik data. OKI coordinates, maintaines and hosts piwik.
2: decentralized: allow every chapter to connect its own piwik instance and let them organize access to piwik. i can offer my piwik instance for example to others, but without any guarantee of general support. but the last 3 years i am running it never a problem appeared.