It is currently front-paged, but this is not sufficient; your banner idea sounds like a good one. I don't normally enter through the Monastery Gates, but instead jump directly to SOPW, as that's where everything that interests me tends to be found. If not for a chatterbox mention of passwords being published, I would not be aware of this.

Voting up the announcement to get it into daily/weekly best would also help with getting the word out, but a site-wide banner would probably be the most effective way to do it.