I've been struggling to come up with a good way of collecting Brum-webbery-esque events together — it's so easy to create a blog or a FB group for each individual strand that some really interesting stuff gets missed because information is splintered and then disseminated across ambient networks (twitter especially).
So, without a better idea (or having to do it physically myself), the best way I can come up with is to use the ;Brum Bloggers Upcoming Group — to which anyone can join and add an event. You can add events created by others to the group - I'm thinking Multipack, Hackspace (now FizzPop) or anything really.
You can then subscribe to the feed, direct to your calendar if you so wish (how to do this).
To try an broaden it out I've changed the name of the group to "Paradise Circus"