"...and her message. And you’re hurting the presenter, since the message you’re sending to them."

'Her' then 'them'? I feel like whenever people put "her" when it's not defined, they are actually pausing or backtracking to purposefully place 'her' where they'd normally place 'his'. Much simpler would be 'the' or 'their', in this case.

Relevant http://www.slate.com/articles/podcasts/lexicon_valley/2012/0...