Create a page about your wiki!
Create a page about your answers wiki and put it in Category:Wikis. Talk about your subject, your setup, your user-base... Anything you think would be interesting to other people checking out your wiki. Have fun, add screenshots, advertise ferociously on that page! Make sure you link to the actual wiki though. Also, has to be an answers wiki because, well, this is a wiki dedicated to answers wikis!