This is one of those 'infinitely argued' questions. Bazillion threads with a quadrillion comments.
I've been on Newzbin since BEFORE it was pay. Their 'claim to fame' vrs the other indexers is that they use those funny things called 'humans' to do their indexing, rather than some smart (or, not so smart) program to auto-collect things.
Not that I don't use those as well; everyone has a 'fav' in that department, I like Binsearch for it's base-bones interface.
And not that using 'humans' to index is without fail, either, far from it.
And now that they are cow-towing to the MP**'s of the world, it's started it's slow decline into the setting sun (removing indexed files on mere request, not on any court order or actual 'proof' of infringement).
So, you have to make a decision as to if it's worth the 25cents a week or so, or not. For me, it's simply one arrow in the quiver to bring to bear on a usenet that has simply grown 'out of control' over the last few years.