Is it legal and ethical to post my notes of a conference I am attending on my website? I'm due to attend a conference soon, and plan to take notes on the talks I attend. My note-taking software of choice (org-mode) can easily export to HTML. Is it legal to post my notes on my website? Is it ethical?
Firstly, you will need to ensure that content from the conference is allowed to be shared - I have attended conferences were we were explicitly told not to share the content as much of it was pre-publication.

Secondly, and very importantly, if it is allowed and you do take notes, you should provide proper attribution - referencing the author/speaker and the conference proceedings.

If you are not sure of the legalities of reproducing your notes - ask and receive explicit advice.