For the past three years, an open source consulting firm appropriately named the Olliance Group has put on an event called the “Open Source Think Tank”. Mark Hinkle and I have attended for the last two. The location is a well-regarded resort in Napa Valley called the Silverado. While a less posh setting might feel more natural for an open source conference (and I might have chosen a slightly less pretentious title), the events have been very worthwhile.