Useful and harmful. ;-)
Yes, to an extent. I've had Facebook for about six years (I found HPMOR about 8 months ago, and LW about 7?) but I deleted the majority of easily accessible content and do not post anything particularly introspective on there. I know, generally, how I felt about more culturally popular memes, what I really wish I remember though are things like cryonics or the singularity, to which I never gave serious consideration before LW.
Edit: At one point, I wrote a program to click the "Older posts" button on Facebook so I could go back and read all of my old posts, but it's been made largely obsolete by the timeline feature.
I intended Leveling Up in Rationality to communicate this:
But some people seem to have read it and heard this instead:
This failure (on my part) fits into a larger pattern of the Singularity Institute seeming too arrogant and (perhaps) being too arrogant. As one friend recently told me:
So, I have a few questions: