This quest to discover XEP-0178 (Best Practices for Use of SASL EXTERNAL with Certificates) was automagically added, to fulfill the quest at Discover XEPs. As of 2011-05-25 the status of this Informational XEP is Active. What does that even mean?! Check it out at XEP-0178: Best Practices for Use of SASL EXTERNAL with Certificates 