It’s a long article, but the final paragraph points to why the whole thing is important to read (and I quote):
The important points to emphasize are three:  There is openness in the public, and especially among a much, much broader group than many think, to discussing these issues – including even the word “socialism;”  It is accordingly time to get very serious about some of the challenging substantive and theoretical issues involved; and  There are also many on-the-ground experiments, and projects and developments that suggest practical directions that are under way, but also that a new politics (whatever it is called) might begin to build upon them if it got serious.
We have a lot to talk about, and we need a lot more voices in the debate than the traditional – and definitely the institutional – Left. Socialism may just not mean what you think it means – hell, it doesn’t mean what I think it means, and that’s why I think the new debate is so exciting.
Whole article here.