Phil Butler reported on June 22 that Wikia has gotten a face lift. I think the UI and AJAX features are insignificant compared to the new collaboration features; tagging, voting and sharing.
They still haven’t implemented a way to get an RSS feed from a page to show edits. This is a very useful feature on Confluence and I wonder why they don’t do something similar?
I’ve also noticed that wikia is gaining some traction with Alexa users:
Entries (RSS)