My presentation at LOSUG on tuesday went down like a house on fire – I think it would be safe to say that the phrase for the evening was ‘It’s a cache!’. For that to make sense, you need to look at the slides, which are now available here. Attendance was great, but it seems the last minute change of day meant that some people missed the session. We had 151 people register, and about 80 turned up on the night.