Well, I had lots of conspiracy theories about the Bush Administration. Can't say I worry much about Obama.
A couple of weeks ago, 999 posted a list of scary-sounding executive orders that has been circulating around the Internet. Turns out they were orders signed by John F. Kennedy in 1962. This order signed by Obama is just about the same - a routine order giving the Executive Branch certain broad powers in cases of emergency. I'd worry if such powers were given to corporations, but it seems reasonable for the Executive Branch to need emergency powers at times.
Doesn't worry me a bit.
Huffington Post shows some concern, but not the "sky is falling" message of the first post.

-Joe, retired Fed-