That might be clearer if the header was just 'slides and notes from my talk', instead you actually claimed the opposite, that it's a 'blogified version', but it

That might be clearer if the header was just 'slides and notes from my talk', instead you actually claimed the opposite, that it's a 'blogified version', but it's not really - I tripped up on the same thing, and then got through several 'duplicate images', 'oh no very slightly different images', before it finally dawned on me that they were slides.