Is it worth having respondents actually weight the various options? What you are getting with the voting below is a count of the media that various people ranked first overall, but what if among those who prefer blogs (or whatever), they prefer them to pdfs (or whatever) by a small margin and among those who prefer pdfs, they prefer them to blogs by a large margin?
Also, what is the barrier to doing all or most of the items on your list?
In our discussion of academic papers, Lukeprog argued that lots of smart people preferred to read ideas in academic paper format. Based on my observations, I mostly disagree. But that's just anecdotal evidence. Let's use Science!
Suppose someone at the Singularity Institute thought up a cool new idea: it could be about rationality, Friendly AI, decision theory, making money, or any of the other topics we discuss here on LW. Explaining it takes about ten pages, and it's nontechnical enough that it can be explained to a general audience of non-mathematicians. Which of the following explanations would you be most likely to actually sit down and read through?
EDIT: To state the obvious, this poll will be biased in favor of blog postings, since it's on a blog. However, I still think it'll provide data that's much better than anecdotal guessing. I've emailed a few rationalist mailing lists to try and counteract this effect.