Hanson is on record as being un-thrilled about attempts to contact extraterrestrial intelligences. I share his position.
But for some odd reason he thinks that people who fear a possible (technological) Singularity are sadly misguided. This seems on its face badly inconsistent. Aliens from another star system are a threat, but an independent AI more intelligent than humans (and with different goals and values) is not? Puh-leeze. At least David Chalmers has the right idea.
[Note: Hanson has responded in the comments to this post. If you are a regular reader of his blog, you know that I am emphasizing this because it raises my status.]