Minor formatting issue- in the section on "Event horizon" the url links need spaces between the words so they don't appear as " theevent horizonof" and " thegravitational singularitybreaks". There are some similar issues with some of the italics.

I would also suggest that it may make sense to have a direct link to Eliezer's bit about three schools.

A major part of Kurzweil's approach is the idea that this linear v. exponential issue causes people to underestimate technological change, and this seems worth mentioning.

When you say:

Computers remain far short of human intelligence

this jars slightly with the sentence right before. I would suggest saying "In general, computers remain far short of human intelligence" or something similar.