This year my Ada Lovelace Day post is about Lorna Jane Mitchell. (The brief: to write about a woman who's achievements you admire.) I appreciate her knowledge of the deep things of PHP, and I mentally file away her blog posts on the subject as "if/when I really get into a lot of PHP this will be useful". She talks at conferences, writes books and makes videos (similarly filed away) and is also involved in the joind.in website. I admire all this sharing of knowledge that she does.
Previous posts: 2014 Rachel Andrew, 2013 Kathy Sierra, 2012 Aleks Krotoski.(The picture comes from Sydney Padua.)