Since weekends here are very dead contributionwise but as the vodka question pointed out, not so for casual browsers generally, I think every Friday or Saturday we can have a scheduled chat room event.
We can brainstorm for a killer weekend stimulus question and post it once we hit on it.
Weekend stimulus questions should have wide appeal and a fun aspect but still be a perfectly relevant travel question. The vodka question was the perfect example.
They don't have to be problems you are immediately facing. They just have to be good questions. It doesn't matter whether the person asking already knows the answer or not. What matters is that it be the kind of travel question lots of people would ask or would like to know the answer to if they unexpectedly came across it.
You don't even have to think of the question first. You can think of some amazing travel factoid you happen to have learned and then think up a way to ask a question that would lead to it. Give others a chance to answer first and if nobody finds the answer you had in mind you can then submit your answer later in the weekend.
The key is "broad interest". Something people who don't know anything about "exchanging stacks" or geeky stuff will want to click on when they see it on Facebook or Twitter. But it also must be on-topic!