Proposal: Data Science
Isn't the subject of this proposal already covered in
Well this is more of a place for Data Scientists/Machine Learning Engineers/Information Retrieval Engineers/Data Engineers and so on to hover on. Stats-Stackexchange (purely for Statisticians) does not cover anything on Mahout, Hadoop, Twitter Storm, scikit-learn, Solr/Lucene, Nutch/scrapy and endless list of such Algorithms/Softwares that are used in solving real world Data Science problems. It is now not just about Regression & R (stats.stackexchange), nor is it just about "I am getting a memory leak in my Weka program given below (stackoverflow.com)" there is much more to Data Science in the so called world of Big & Fast Data.
A sample question (which is not fit for all the sites listed by you):
How can I train Baum Welch Algorithm used in Hidden Markov Model in Mahout in parallel?