Inviting other people to enjoy science casually, or inspire them to join, or simply giving them ways of thinking and some knowledge, is part of what a scientist should also consider doing. Specially these days that most of us are supported by the public. Some of my blog posts, like puzzle series, can be considered as popularizing scientific ideas.

You should check Brady Haran's work, singingbanana, SciShow, CGP Grey, MinutePhysics, SmarterEveryDay, and Vi Hart.

I recently learned about the project http://www.worldscienceu.com/ which looks promising. I wish they consider adding enthusiastic public to the equation.