So how does this sound?
Here's the deal: we'll solicit problems via this email address: firstname.lastname@example.org. We'll select one problem each week and post it to the Google group. We'll let the group work on the problem and at the end of the week we'll post a summary of the problem and all the advice (with links to blogs/websites of advice-givers, when known). That's pretty much it. Over time, the blog will become a treasure trove of specific work-related problems with related advice and solutions.