Data mining conferences? What are the most significant annual Data Mining conferences?
Rules:


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*One conference per answer

*Include a link to the conference 

 A: KDD (ACM Special Interest Group on Knowledge Discovery and Data Mining)

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*KDD 2010
A: NIPS:  http://nips.cc/
A: Strata Conference:

Strata Conference is for developers, data scientists, data analysts,
  and other data professionals.
Strata Conference covers the latest and best tools and technologies
  for this new discipline, along the entire data supply chain—from
  gathering, cleaning, analyzing, and storing data to communicating data
  intelligence effectively. With hardcore technical sessions, case
  studies, and provocative reports from the leading edge, Strata
  Conference showcases the people, tools, and technologies that make big
  data work.

Not sure I'd quite classify Strata as "data mining" (perhaps "how to use data in the industry", instead), but data mining is certainly a part of it.
A: SIAM's Data Mining Conference, SDM11.
A: Salford Analytics and Data Mining Conference 2012.
A: IEEE International Conference on Data Mining (ICDM)
A: M2010 - 13th Annual Data Mining Conference http://www.sas.com/m2010
A: Predictive Analytics World: pawcon.com.
A: Check this useful site: AIStats
A: Industrial Conference on Data Mining IndustrialDM
