This brand-new post from Michael Anissimov strikes me as just the right thing.
(It's highly relevant to this thread in general -- anyone who doesn't already read his blog should check it out.)
Yes, I've only seen it after posting this one. It is one of a few resources that recently emerged that satisfy my idea of a concise and easy roundup. So far you had to read many papers or all of the sequences to be able to implicitly conclude that you should support the SIAI. I don't think that approach works very well. If people are in doubt after reading the following resources, then you can still tell them to read LW:
...
Here is another example of an outsider perspective on risks from AI. I think such examples can serve as a way to fathom the inferential distance between the SIAI and its target audience as to consequently fine tune their material and general approach.
via sentientdevelopments.com
This shows again that people are generally aware of potential risks but either do not take them seriously or don't see why risks from AI are the rule rather than an exception. So rather than making people aware that there are risks you have to tell them what are the risks.