I don't agree with the above interpretation as it is cautiously defensive and entirely contrary to the entire objective of the Plutonian energy, which is empowerment above and beyond transient circumstances. Pluto holds the 'beyond death' significance and taps into the unconscious levels of potential and godseed within.
Certainly there is a theme of 'group empowerment' implied with Pluto in 11th, but it is ultimately about what you do with it personally. It isn't about what is 'projected', but about your internal process. Remember, Pluto was god of the underworld ... it is about what is subterranean and deep within you. Others, even groups may trigger these kinds of developments within you, but you benefit to the extent you can understand the difference between real power and force. Force and dominance will get you nothing but the same in return, as those are 'power over (others)'.
Ultimately this placement holds the potential for effectiveness in group dynamics, towards group aims to the extent that you are anchored with a personal reference to the charge you have over your internal being. Conversely, if this is your Pluto's true natal position, you'll probably best learn those things in the context of group dynamics.
Joan McEvers and Marion March in Volume 1 of their "The Only Way to Learn Astrology" series say Pluto in the 11th house indicates a "strong communal sense", an "urge to reform" ... interest in worldly affairs, "may participate in reform movements or social improvements."