On one hand, Eliezer writes extremely good explanations. I'm learning from his style a lot.

On the other hand, many people have pointed out that he doesn't publish novel rigorous results, which kinda detracts from the aura.

On the third hand, he often finds and corrects non-obvious mathematical mistakes made by other people, including me, and he's turned out right every time that I know of.

On the fourth hand, I've seen multiple cases where he made math mistakes of his own, and have discovered a couple of those myself. But that could be attributed to the fact that he publishes so much, and his error frequency is certainly many times lower than mine.

On the fifth hand, he has published novel non-rigorous arguments on real world topics that I don't completely agree with but find pretty important. Biggest of them is the idea of Friendly AI.

The weighting coefficients you give to those considerations are, of course, up to you.

ETA: on an unrelated topic, would you like to write a post on Go? CronoDAS has just turned our attention to something interesting.