Perfect Dark gives us this tidbit about the Dark Side of the Force in Episode II in this thread where you can post your reaction and ideas as well:

Bithysith makes the observation that in order to sense the "dark times to come", you have to peer past the dark side itself? That has some implications as well.

Mort made an analogy to Crouching Tiger, Hidden Dragon where Chow Yun Fat plays a warrior monk. Basically the gist of the scene is that he was looking for enlightenment from his meditation but found only a vast empty sadness permeating his being. His speculation suggests that maybe Yoda is trying to see into the future but all he can detect is the presence of the Dark Side, which acts like a black shroud hiding the future from him.

The darkside would have a definitive advantage. All of Palpatine's "Just as I have foreseen" lines would have more weight. It might explain Yoda and Obi-Wan's seeming complacency while waiting twenty years for Luke to come along. It might explain how they knew to wait for Luke, maybe he appeared to them as a bright shining point past the darkness. The proverbial light at the end of the tunnel.

And finally, Bithysith makes yet another connection, possibly using this to explain how Palpatine can walk among them undetected. He is literally "pulling the wool over their eyes".

Also of interest to connect to this news may be this previous report and this fairly recent one as well.