Zerohedge had an article on this that was linked to in another thread, but I think it deserves its own.
High Frequency Trading are trade made under completely automatic computer control. The "Flash Crashes" we have seen in the market have been blamed largely on these devices, which are so fast,
they can apparently reverse time.Nanex has an animated Gif showing the amount of volume done by these automated machines. After the US lost its rating, they became MAJOR market participants. The people are out. If you still own stock, get out. Get out now. No. right now. Stop reading this. Get out.
When I say that the markets are a total smoke-and-mirrors farce, do you understand what I am saying now? All of the PEOPLE are gone. The entire edifice is just these computers trading in-and-out with each other all in a matter of microseconds, over and over again. None of it is real. And the futures markets are exactly the same. The people have been either leaving or have been forced out, or raped. Get out, get out, get out, get out, get out. -Ann Barnhart
Its a big GIF, so it takes awhile to load.
Its like watching the market catch fire and burn to the ground. The stock market is a dead man walking. Zombie machines trading with each other. .
(The ZH gif didn't work for me.
Here is a direct link or
here