I've read some of their blogs. I don't recommend it. They are so full of demonically inspired hatred for God, it's sickening to the soul.
They post the same old "proof" against Christianity, such as biblical contradictions, that has been refuted for centuries, yet act as if they just discovered a nugget that will finally destroy faith in God.
And as far as I can tell from what I've read, they seem to be mostly liberals who absolutely hate anything conservative (go figure).
I get the spiritual impression, that many of them have been turned over. Their hearts are so hardened that what they write is simply a reflection of the vile evil in their souls. I suspect many of them are truly possessed.
Most Christians would come away from reading some of those blogs feeling dirty and sad. Dirty from the filthy content, and sad because these atheists think they are so much more intelligent than the average "stupid" Christian, yet their "evidence" against God and Christianity could be refuted by a first year Sunday school student with an average knowledge of science and history.