A great intro to the climbing at Potrero John. Interesting face climbing that always feels secure (and well-protected). Great rock by area standards.
There is a clear crux encounter at the third bolt.
This route can be used to access the top anchors of other routes. After completing Zyzzxx, run the rope through the anchor, lead across to the right on a decent ledge, clip into the anchor on another route, and pull your rope.