I just finished "Bloom" by Wil McCarthy.
I suppose you could say it's "post - singularity". It has to do with nano-tech gone "bad". I read it......that's about all I can say for it....I doubt I'll read it again. No complaints (not specificlly....about the tech anyway...or other asumptions...)...it's not a "happy" book though....and I like to "like" what I read....I've read Vinges books many times..