The statement about the "open source stack" is especially ironic considering that StackOverflow just switched over from using MSSQL full-text indexing to using

The statement about the "open source stack" is especially ironic considering that StackOverflow just switched over from using MSSQL full-text indexing to using Lucene for search: http://blog.stackoverflow.com/2011/01/stack-overflow-search-now-81-less-crappy/ http://blog.stackoverflow.com/2011/01/stack-overflow-search-...