Agree, that's why I used to keep all tech seminar videos with notes on a separate thread on the old forum.I know.
Seminars/presentations are goldmines of information. Therefore its better to have the photos posted here, for future reference. In case the blog these pics are sourced from goes down we would lose very valuable pics. So I posted it here.
Some are copied here : Technical Seminar Videos
Its sad that we did not get any recording from last Aero India.