This is just an idea. How about using the blog for job posts and/or conference announcements? Of course, only theory stuff. The DMANET mailing list is doing the same thing, but you always find stuff that is outside TCS.
Maybe this will spark interest in theorists who are not users.
We can also stick only to conferences, and for example keep a list of deadlines, events etc etc. Something like this http://www.dur.ac.uk/tom.friedetzky/conf.html