This would've been an inspiring thing to read back in '09 when it was published.
But save three or four chapters, the contributions that make up this volume appear with hindsight to be little more than starry-eyed optimism, or doomsday pessimism. Which is odd, considering the supposed focus of the book is what radical politics is (was then), rather than what radical politics will, or should, or might, be.
The fallout of the 2008 financial crisis was not a mighty upheaval, in wider political terms. Neo-liberalism hasn't been usurped or entered terminal decline. Neither has any coherent alternative to the present order been formulated, let alone entered the mainstream.
Contrary to the majority of views herein, varied though they may be, the neo-liberal laissez faire world order remains intact, even bolstered.
This volume probably has some value as a historical document of post-GFC anxiety and speculation in the fields of political science and sociology, but I don't really see its value in 2020 otherwise.